diff --git a/frontend/src/InteractiveImport/Language/SelectLanguageModalContentConnector.js b/frontend/src/InteractiveImport/Language/SelectLanguageModalContentConnector.js
index 1eda0b176..f4b6796a3 100644
--- a/frontend/src/InteractiveImport/Language/SelectLanguageModalContentConnector.js
+++ b/frontend/src/InteractiveImport/Language/SelectLanguageModalContentConnector.js
@@ -11,7 +11,22 @@ function createMapStateToProps() {
   return createSelector(
     createLanguagesSelector(),
     (languages) => {
-      return languages;
+      const {
+        isFetching,
+        isPopulated,
+        error,
+        items
+      } = languages;
+
+      const filterItems = ['Any', 'Original'];
+      const filteredLanguages = items.filter((lang) => !filterItems.includes(lang.name));
+
+      return {
+        isFetching,
+        isPopulated,
+        error,
+        items: filteredLanguages
+      };
     }
   );
 }
diff --git a/frontend/src/Series/Index/Menus/SeriesIndexSortMenu.js b/frontend/src/Series/Index/Menus/SeriesIndexSortMenu.js
index 018a4c8eb..7ea5ea75b 100644
--- a/frontend/src/Series/Index/Menus/SeriesIndexSortMenu.js
+++ b/frontend/src/Series/Index/Menus/SeriesIndexSortMenu.js
@@ -46,6 +46,15 @@ function SeriesIndexSortMenu(props) {
           Network
         </SortMenuItem>
 
+        <SortMenuItem
+          name="originalLanguage"
+          sortKey={sortKey}
+          sortDirection={sortDirection}
+          onPress={onSortSelect}
+        >
+          Original Language
+        </SortMenuItem>
+
         <SortMenuItem
           name="qualityProfileId"
           sortKey={sortKey}
diff --git a/frontend/src/Series/Index/Table/SeriesIndexHeader.css b/frontend/src/Series/Index/Table/SeriesIndexHeader.css
index 8c5d9f7b0..b390bf513 100644
--- a/frontend/src/Series/Index/Table/SeriesIndexHeader.css
+++ b/frontend/src/Series/Index/Table/SeriesIndexHeader.css
@@ -30,6 +30,7 @@
   flex: 2 0 90px;
 }
 
+.originalLanguage,
 .qualityProfileId {
   composes: headerCell from '~Components/Table/VirtualTableHeaderCell.css';
 
diff --git a/frontend/src/Series/Index/Table/SeriesIndexRow.css b/frontend/src/Series/Index/Table/SeriesIndexRow.css
index 85d313c05..1023ba6bf 100644
--- a/frontend/src/Series/Index/Table/SeriesIndexRow.css
+++ b/frontend/src/Series/Index/Table/SeriesIndexRow.css
@@ -66,6 +66,7 @@
   flex: 2 0 90px;
 }
 
+.originalLanguage,
 .qualityProfileId {
   composes: cell;
 
diff --git a/frontend/src/Series/Index/Table/SeriesIndexRow.js b/frontend/src/Series/Index/Table/SeriesIndexRow.js
index 96052addc..2fc8f60f1 100644
--- a/frontend/src/Series/Index/Table/SeriesIndexRow.js
+++ b/frontend/src/Series/Index/Table/SeriesIndexRow.js
@@ -85,6 +85,7 @@ class SeriesIndexRow extends Component {
       titleSlug,
       seriesType,
       network,
+      originalLanguage,
       qualityProfile,
       nextAiring,
       previousAiring,
@@ -212,6 +213,17 @@ class SeriesIndexRow extends Component {
               );
             }
 
+            if (name === 'originalLanguage') {
+              return (
+                <VirtualTableRowCell
+                  key={name}
+                  className={styles[name]}
+                >
+                  {originalLanguage.name}
+                </VirtualTableRowCell>
+              );
+            }
+
             if (name === 'qualityProfileId') {
               return (
                 <VirtualTableRowCell
@@ -511,6 +523,7 @@ SeriesIndexRow.propTypes = {
   title: PropTypes.string.isRequired,
   titleSlug: PropTypes.string.isRequired,
   seriesType: PropTypes.string.isRequired,
+  originalLanguage: PropTypes.object.isRequired,
   network: PropTypes.string,
   qualityProfile: PropTypes.object.isRequired,
   nextAiring: PropTypes.string,
diff --git a/frontend/src/Store/Actions/seriesActions.js b/frontend/src/Store/Actions/seriesActions.js
index 0f7a3ff33..2226fa3af 100644
--- a/frontend/src/Store/Actions/seriesActions.js
+++ b/frontend/src/Store/Actions/seriesActions.js
@@ -131,6 +131,13 @@ export const filterPredicates = {
     return predicate(item.ratings.value * 10, filterValue);
   },
 
+  originalLanguage: function(item, filterValue, type) {
+    const predicate = filterTypePredicates[type];
+    const { originalLanguage } = item;
+
+    return predicate(originalLanguage ? originalLanguage.name : '', filterValue);
+  },
+
   releaseGroups: function(item, filterValue, type) {
     const { statistics = {} } = item;
 
@@ -267,6 +274,25 @@ export const filterBuilderProps = [
       return tagList.sort(sortByName);
     }
   },
+  {
+    name: 'originalLanguage',
+    label: 'Original Language',
+    type: filterBuilderTypes.EXACT,
+    optionsSelector: function(items) {
+      const languageList = items.reduce((acc, series) => {
+        if (series.originalLanguage) {
+          acc.push({
+            id: series.originalLanguage.name,
+            name: series.originalLanguage.name
+          });
+        }
+
+        return acc;
+      }, []);
+
+      return languageList.sort(sortByName);
+    }
+  },
   {
     name: 'releaseGroups',
     label: 'Release Groups',
diff --git a/frontend/src/Store/Actions/seriesIndexActions.js b/frontend/src/Store/Actions/seriesIndexActions.js
index 0e1c4d9e5..8cdadba95 100644
--- a/frontend/src/Store/Actions/seriesIndexActions.js
+++ b/frontend/src/Store/Actions/seriesIndexActions.js
@@ -95,6 +95,12 @@ export const defaultState = {
       isSortable: true,
       isVisible: false
     },
+    {
+      name: 'originalLanguage',
+      label: 'Original Language',
+      isSortable: true,
+      isVisible: false
+    },
     {
       name: 'added',
       label: 'Added',
@@ -249,6 +255,12 @@ export const defaultState = {
       return statistics.seasonCount;
     },
 
+    originalLanguage: function(item) {
+      const { originalLanguage = {} } = item;
+
+      return originalLanguage.name;
+    },
+
     ratings: function(item) {
       const { ratings = {} } = item;
 
diff --git a/src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Aggregation/Aggregators/AggregateLanguageFixture.cs b/src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Aggregation/Aggregators/AggregateLanguageFixture.cs
index 833b76b42..2d13d6792 100644
--- a/src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Aggregation/Aggregators/AggregateLanguageFixture.cs
+++ b/src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Aggregation/Aggregators/AggregateLanguageFixture.cs
@@ -18,6 +18,7 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Aggregation.Aggregators
     public class AggregateLanguageFixture : CoreTest<AggregateLanguage>
     {
         private LocalEpisode _localEpisode;
+        private Series _series;
         private string _simpleReleaseTitle = "Series.Title.S01E01.xyz-RlsGroup";
 
         [SetUp]
@@ -26,11 +27,16 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Aggregation.Aggregators
             var episodes = Builder<Episode>.CreateListOfSize(1)
                                            .BuildList();
 
+            _series = Builder<Series>.CreateNew()
+                       .With(m => m.OriginalLanguage = Language.English)
+                       .Build();
+
             _localEpisode = Builder<LocalEpisode>.CreateNew()
                                                  .With(l => l.DownloadClientEpisodeInfo = null)
                                                  .With(l => l.FolderEpisodeInfo = null)
                                                  .With(l => l.FileEpisodeInfo = null)
                                                  .With(l => l.Episodes = episodes)
+                                                 .With(l => l.Series = _series)
                                                  .Build();
         }
 
@@ -72,7 +78,7 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Aggregation.Aggregators
         {
             var result = Subject.Aggregate(_localEpisode, null);
 
-            result.Languages.Should().Contain(Language.English);
+            result.Languages.Should().Contain(_series.OriginalLanguage);
         }
 
         [Test]
@@ -120,13 +126,13 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Aggregation.Aggregators
         [Test]
         public void should_return_file_language_when_file_language_is_higher_than_others()
         {
-            _localEpisode.DownloadClientEpisodeInfo = GetParsedEpisodeInfo(new List<Language> { Language.English }, _simpleReleaseTitle);
-            _localEpisode.FolderEpisodeInfo = GetParsedEpisodeInfo(new List<Language> { Language.English }, _simpleReleaseTitle);
+            _localEpisode.DownloadClientEpisodeInfo = GetParsedEpisodeInfo(new List<Language> { Language.Unknown }, _simpleReleaseTitle);
+            _localEpisode.FolderEpisodeInfo = GetParsedEpisodeInfo(new List<Language> { Language.Unknown }, _simpleReleaseTitle);
             _localEpisode.FileEpisodeInfo = GetParsedEpisodeInfo(new List<Language> { Language.French }, _simpleReleaseTitle);
 
             GivenAugmenters(new List<Language> { Language.French },
-                new List<Language> { Language.English },
-                new List<Language> { Language.English },
+                new List<Language> { Language.Unknown },
+                new List<Language> { Language.Unknown },
                 null);
 
             Subject.Aggregate(_localEpisode, null).Languages.Should().Contain(_localEpisode.FileEpisodeInfo.Languages);
@@ -135,9 +141,9 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Aggregation.Aggregators
         [Test]
         public void should_return_multi_language()
         {
-            GivenAugmenters(new List<Language> { Language.English },
+            GivenAugmenters(new List<Language> { Language.Unknown },
                             new List<Language> { Language.French, Language.German },
-                            new List<Language> { Language.English },
+                            new List<Language> { Language.Unknown },
                             null);
 
             Subject.Aggregate(_localEpisode, null).Languages.Should().Equal(new List<Language> { Language.French, Language.German });
diff --git a/src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Specifications/UpgradeSpecificationFixture.cs b/src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Specifications/UpgradeSpecificationFixture.cs
index 1bc867448..0cb595dd0 100644
--- a/src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Specifications/UpgradeSpecificationFixture.cs
+++ b/src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Specifications/UpgradeSpecificationFixture.cs
@@ -260,46 +260,6 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Specifications
             Subject.IsSatisfiedBy(_localEpisode, null).Accepted.Should().BeFalse();
         }
 
-        [Test]
-        public void should_return_false_if_it_is_a_preferred_word_downgrade_and_equal_language_and_quality()
-        {
-            var lowFormat = new List<CustomFormat> { new CustomFormat("Bad Format", new ResolutionSpecification { Value = (int)Resolution.R1080p }) { Id = 2 } };
-
-            CustomFormatsFixture.GivenCustomFormats(lowFormat.First());
-
-            _series.QualityProfile.Value.FormatItems = CustomFormatsFixture.GetSampleFormatItems();
-
-            Mocker.GetMock<IConfigService>()
-                  .Setup(s => s.DownloadPropersAndRepacks)
-                  .Returns(ProperDownloadTypes.DoNotPrefer);
-
-            Mocker.GetMock<ICustomFormatCalculationService>()
-                  .Setup(s => s.ParseCustomFormat(It.IsAny<EpisodeFile>()))
-                  .Returns(new List<CustomFormat>());
-
-            Mocker.GetMock<ICustomFormatCalculationService>()
-                  .Setup(s => s.ParseCustomFormat(It.IsAny<ParsedEpisodeInfo>()))
-                  .Returns(lowFormat);
-
-            _localEpisode.Quality = new QualityModel(Quality.Bluray1080p);
-
-            _localEpisode.Episodes = Builder<Episode>.CreateListOfSize(1)
-                                                     .All()
-                                                     .With(e => e.EpisodeFileId = 1)
-                                                     .With(e => e.EpisodeFile = new LazyLoaded<EpisodeFile>(
-                                                         new EpisodeFile
-                                                         {
-                                                             Quality = new QualityModel(Quality.Bluray1080p),
-                                                             Languages = new List<Language> { Language.Spanish }
-                                                         }))
-                                                     .Build()
-                                                     .ToList();
-
-            _localEpisode.FileEpisodeInfo = Builder<ParsedEpisodeInfo>.CreateNew().Build();
-
-            Subject.IsSatisfiedBy(_localEpisode, null).Accepted.Should().BeFalse();
-        }
-
         [Test]
         public void should_return_true_if_it_is_a_preferred_word_downgrade_and_language_downgrade_and_a_quality_upgrade()
         {
diff --git a/src/NzbDrone.Core.Test/ParserTests/LanguageParserFixture.cs b/src/NzbDrone.Core.Test/ParserTests/LanguageParserFixture.cs
index 40baa32ad..47c50014d 100644
--- a/src/NzbDrone.Core.Test/ParserTests/LanguageParserFixture.cs
+++ b/src/NzbDrone.Core.Test/ParserTests/LanguageParserFixture.cs
@@ -11,21 +11,27 @@ namespace NzbDrone.Core.Test.ParserTests
     public class LanguageParserFixture : CoreTest
     {
         [TestCase("Title.the.Series.2009.S01E14.English.HDTV.XviD-LOL")]
+        [TestCase("Series Title - S01E01 - Pilot.English.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.english.sub")]
+        public void should_parse_language_english(string postTitle)
+        {
+            var result = LanguageParser.ParseLanguages(postTitle);
+            result.First().Should().Be(Language.English);
+        }
+
+        [TestCase("Spanish Killroy was Here S02E02 Flodden 720p AMZN WEB-DL DDP5 1 H 264-NTb")]
+        [TestCase("Title.the.Spanish.Series.S02E02.1080p.WEB.H264-CAKES")]
+        [TestCase("Title.the.Spanish.Series.S02E06.Field.of.Cloth.of.Gold.1080p.AMZN.WEBRip.DDP5.1.x264-NTb")]
         [TestCase("Title.the.Series.2009.S01E14.Germany.HDTV.XviD-LOL")]
         [TestCase("Title.the.Series.2009.S01E14.HDTV.XviD-LOL")]
         [TestCase("Title.the.Italian.Series.S01E01.The.Family.720p.HDTV.x264-FTP")]
         [TestCase("Title.the.Italy.Series.S02E01.720p.HDTV.x264-TLA")]
         [TestCase("Series Title - S01E01 - Pilot.en.sub")]
         [TestCase("Series Title - S01E01 - Pilot.eng.sub")]
-        [TestCase("Series Title - S01E01 - Pilot.English.sub")]
-        [TestCase("Series Title - S01E01 - Pilot.english.sub")]
-        [TestCase("Spanish Killroy was Here S02E02 Flodden 720p AMZN WEB-DL DDP5 1 H 264-NTb")]
-        [TestCase("Title.the.Spanish.Series.S02E02.1080p.WEB.H264-CAKES")]
-        [TestCase("Title.the.Spanish.Series.S02E06.Field.of.Cloth.of.Gold.1080p.AMZN.WEBRip.DDP5.1.x264-NTb")]
-        public void should_parse_language_english(string postTitle)
+        public void should_parse_language_unknown(string postTitle)
         {
             var result = LanguageParser.ParseLanguages(postTitle);
-            result.First().Should().Be(Language.English);
+            result.First().Should().Be(Language.Unknown);
         }
 
         [TestCase("Series Title - S01E01 - Pilot.sub")]
@@ -314,7 +320,7 @@ namespace NzbDrone.Core.Test.ParserTests
         public void should_not_parse_series_or_episode_title(string postTitle)
         {
             var result = LanguageParser.ParseLanguages(postTitle);
-            result.First().Name.Should().Be(Language.English.Name);
+            result.First().Name.Should().Be(Language.Unknown.Name);
         }
     }
 }
diff --git a/src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/GetEpisodesFixture.cs b/src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/GetEpisodesFixture.cs
index e86092f6c..1dd3940c5 100644
--- a/src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/GetEpisodesFixture.cs
+++ b/src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/GetEpisodesFixture.cs
@@ -7,6 +7,7 @@ using Moq;
 using NUnit.Framework;
 using NzbDrone.Core.DataAugmentation.Scene;
 using NzbDrone.Core.IndexerSearch.Definitions;
+using NzbDrone.Core.Languages;
 using NzbDrone.Core.Parser;
 using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Tv;
@@ -41,7 +42,8 @@ namespace NzbDrone.Core.Test.ParserTests.ParsingServiceTests
                 SeriesTitle = _series.Title,
                 SeasonNumber = 1,
                 EpisodeNumbers = new[] { 1 },
-                AbsoluteEpisodeNumbers = new int[0]
+                AbsoluteEpisodeNumbers = new int[0],
+                Languages = new List<Language> { Language.English }
             };
 
             _singleEpisodeSearchCriteria = new SingleEpisodeSearchCriteria
diff --git a/src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/MapFixture.cs b/src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/MapFixture.cs
index 5249af1aa..d8c6fbb8d 100644
--- a/src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/MapFixture.cs
+++ b/src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/MapFixture.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using FizzWare.NBuilder;
@@ -7,6 +7,7 @@ using Moq;
 using NUnit.Framework;
 using NzbDrone.Core.DataAugmentation.Scene;
 using NzbDrone.Core.IndexerSearch.Definitions;
+using NzbDrone.Core.Languages;
 using NzbDrone.Core.Parser;
 using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Tv;
@@ -41,7 +42,8 @@ namespace NzbDrone.Core.Test.ParserTests.ParsingServiceTests
                 SeriesTitle = _series.Title,
                 SeriesTitleInfo = new SeriesTitleInfo(),
                 SeasonNumber = 1,
-                EpisodeNumbers = new[] { 1 }
+                EpisodeNumbers = new[] { 1 },
+                Languages = new List<Language> { Language.English }
             };
 
             _singleEpisodeSearchCriteria = new SingleEpisodeSearchCriteria
diff --git a/src/NzbDrone.Core/CustomFormats/CustomFormatCalculationService.cs b/src/NzbDrone.Core/CustomFormats/CustomFormatCalculationService.cs
index 6b7546db0..b1b6eec29 100644
--- a/src/NzbDrone.Core/CustomFormats/CustomFormatCalculationService.cs
+++ b/src/NzbDrone.Core/CustomFormats/CustomFormatCalculationService.cs
@@ -84,7 +84,8 @@ namespace NzbDrone.Core.CustomFormats
                 ExtraInfo = new Dictionary<string, object>
                 {
                     { "Size", episodeFile.Size },
-                    { "Filename", Path.GetFileName(episodeFile.RelativePath) }
+                    { "Filename", Path.GetFileName(episodeFile.RelativePath) },
+                    { "OriginalLanguage", episodeFile.Series.Value.OriginalLanguage }
                 }
             };
 
diff --git a/src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs b/src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs
index 341fb4d62..42950a407 100644
--- a/src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs
+++ b/src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs
@@ -34,7 +34,11 @@ namespace NzbDrone.Core.CustomFormats
 
         protected override bool IsSatisfiedByWithoutNegate(ParsedEpisodeInfo episodeInfo)
         {
-            return episodeInfo?.Languages?.Contains((Language)Value) ?? false;
+            var comparedLanguage = episodeInfo != null && Value == Language.Original.Id && episodeInfo.ExtraInfo.ContainsKey("OriginalLanguage")
+                ? (Language)episodeInfo.ExtraInfo["OriginalLanguage"]
+                : (Language)Value;
+
+            return episodeInfo?.Languages?.Contains(comparedLanguage) ?? false;
         }
 
         public override NzbDroneValidationResult Validate()
diff --git a/src/NzbDrone.Core/Datastore/Migration/176_original_language.cs b/src/NzbDrone.Core/Datastore/Migration/176_original_language.cs
new file mode 100644
index 000000000..91250d26d
--- /dev/null
+++ b/src/NzbDrone.Core/Datastore/Migration/176_original_language.cs
@@ -0,0 +1,16 @@
+using FluentMigrator;
+using NzbDrone.Core.Datastore.Migration.Framework;
+using NzbDrone.Core.Languages;
+
+namespace NzbDrone.Core.Datastore.Migration
+{
+    [Migration(176)]
+    public class original_language : NzbDroneMigrationBase
+    {
+        protected override void MainDbUpgrade()
+        {
+            Alter.Table("Series")
+                .AddColumn("OriginalLanguage").AsInt32().WithDefaultValue((int)Language.English);
+        }
+    }
+}
diff --git a/src/NzbDrone.Core/Languages/Language.cs b/src/NzbDrone.Core/Languages/Language.cs
index ab400fc01..2e6bb638f 100644
--- a/src/NzbDrone.Core/Languages/Language.cs
+++ b/src/NzbDrone.Core/Languages/Language.cs
@@ -102,6 +102,7 @@ namespace NzbDrone.Core.Languages
         public static Language Malayalam => new Language(29, "Malayalam");
         public static Language Ukrainian => new Language(30, "Ukrainian");
         public static Language Slovak => new Language(31, "Slovak");
+        public static Language Original => new Language(-2, "Original");
 
         public static List<Language> All
         {
@@ -140,7 +141,8 @@ namespace NzbDrone.Core.Languages
                     Bulgarian,
                     Malayalam,
                     Ukrainian,
-                    Slovak
+                    Slovak,
+                    Original
                 };
             }
         }
diff --git a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/AggregateLanguage.cs b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/AggregateLanguage.cs
index 06b96e87c..07c0dd34e 100644
--- a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/AggregateLanguage.cs
+++ b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/AggregateLanguage.cs
@@ -22,7 +22,7 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Aggregation.Aggregators
 
         public LocalEpisode Aggregate(LocalEpisode localEpisode, DownloadClientItem downloadClientItem)
         {
-            var languages = new List<Language> { Language.English };
+            var languages = new List<Language> { localEpisode.Series?.OriginalLanguage ?? Language.Unknown };
             var languagesConfidence = Confidence.Default;
 
             foreach (var augmentLanguage in _augmentLanguages)
@@ -37,7 +37,6 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Aggregation.Aggregators
 
                 if (augmentedLanguage?.Languages != null &&
                     augmentedLanguage.Languages.Count > 0 &&
-                    !(augmentedLanguage.Languages.Count == 1 && augmentedLanguage.Languages.Contains(Language.English)) &&
                     !(augmentedLanguage.Languages.Count == 1 && augmentedLanguage.Languages.Contains(Language.Unknown)))
                 {
                     languages = augmentedLanguage.Languages;
diff --git a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromDownloadClientItem.cs b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromDownloadClientItem.cs
index 6ef6d5d60..906d2ff7f 100644
--- a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromDownloadClientItem.cs
+++ b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromDownloadClientItem.cs
@@ -23,7 +23,7 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Aggregation.Aggregators.Augment
 
             foreach (var episode in localEpisode.Episodes)
             {
-                var episodeTitleLanguage = LanguageParser.ParseLanguages(episode.Title, false);
+                var episodeTitleLanguage = LanguageParser.ParseLanguages(episode.Title);
 
                 languages = languages.Except(episodeTitleLanguage).ToList();
             }
diff --git a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromFileName.cs b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromFileName.cs
index 7bdb8c31d..04384a27a 100644
--- a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromFileName.cs
+++ b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromFileName.cs
@@ -21,7 +21,7 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Aggregation.Aggregators.Augment
 
             foreach (var episode in localEpisode.Episodes)
             {
-                var episodeTitleLanguage = LanguageParser.ParseLanguages(episode.Title, false);
+                var episodeTitleLanguage = LanguageParser.ParseLanguages(episode.Title);
 
                 languages = languages.Except(episodeTitleLanguage).ToList();
             }
diff --git a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromFolder.cs b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromFolder.cs
index 39c079f19..3ce9b431c 100644
--- a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromFolder.cs
+++ b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Aggregation/Aggregators/Augmenters/Language/AugmentLanguageFromFolder.cs
@@ -21,7 +21,7 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Aggregation.Aggregators.Augment
 
             foreach (var episode in localEpisode.Episodes)
             {
-                var episodeTitleLanguage = LanguageParser.ParseLanguages(episode.Title, false);
+                var episodeTitleLanguage = LanguageParser.ParseLanguages(episode.Title);
 
                 languages = languages.Except(episodeTitleLanguage).ToList();
             }
diff --git a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Manual/ManualImportService.cs b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Manual/ManualImportService.cs
index 6b6c50871..5ba365cd2 100644
--- a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Manual/ManualImportService.cs
+++ b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Manual/ManualImportService.cs
@@ -139,6 +139,14 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Manual
             var rootFolder = Path.GetDirectoryName(path);
             var series = _seriesService.GetSeries(seriesId);
 
+            var languageParse = LanguageParser.ParseLanguages(path);
+
+            if (languageParse.Count <= 1 && languageParse.First() == Language.Unknown && series != null)
+            {
+                languageParse = new List<Language> { series.OriginalLanguage };
+                _logger.Debug("Language couldn't be parsed from release, falling back to series original language: {0}", series.OriginalLanguage.Name);
+            }
+
             if (episodeIds.Any())
             {
                 var downloadClientItem = GetTrackedDownload(downloadId)?.DownloadItem;
@@ -153,7 +161,7 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Manual
                 localEpisode.ExistingFile = series.Path.IsParentPath(path);
                 localEpisode.Size = _diskProvider.GetFileSize(path);
                 localEpisode.ReleaseGroup = releaseGroup.IsNullOrWhiteSpace() ? Parser.Parser.ParseReleaseGroup(path) : releaseGroup;
-                localEpisode.Languages = (languages?.SingleOrDefault() ?? Language.Unknown) == Language.Unknown ? LanguageParser.ParseLanguages(path) : languages;
+                localEpisode.Languages = (languages?.SingleOrDefault() ?? Language.Unknown) == Language.Unknown ? languageParse : languages;
                 localEpisode.Quality = quality.Quality == Quality.Unknown ? QualityParser.ParseQuality(path) : quality;
 
                 return MapItem(_importDecisionMaker.GetDecision(localEpisode, downloadClientItem), rootFolder, downloadId, null);
diff --git a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/UpgradeSpecification.cs b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/UpgradeSpecification.cs
index ae7f5d9af..4f1ddaf0e 100644
--- a/src/NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/UpgradeSpecification.cs
+++ b/src/NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/UpgradeSpecification.cs
@@ -5,9 +5,7 @@ using NzbDrone.Core.Configuration;
 using NzbDrone.Core.CustomFormats;
 using NzbDrone.Core.DecisionEngine;
 using NzbDrone.Core.Download;
-using NzbDrone.Core.Languages;
 using NzbDrone.Core.Parser.Model;
-using NzbDrone.Core.Profiles.Releases;
 using NzbDrone.Core.Qualities;
 
 namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
@@ -43,7 +41,6 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
                 }
 
                 var qualityCompare = qualityComparer.Compare(localEpisode.Quality.Quality, episodeFile.Quality.Quality);
-                var customFormatScore = GetCustomFormatScore(localEpisode);
 
                 if (qualityCompare < 0)
                 {
@@ -62,46 +59,9 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
                     _logger.Debug("This file isn't a quality revision upgrade for all episodes. Skipping {0}", localEpisode.Path);
                     return Decision.Reject("Not a quality revision upgrade for existing episode file(s)");
                 }
-
-                var customFormats = _customFormatCalculationService.ParseCustomFormat(episodeFile);
-                var episodeFileCustomFormatScore = localEpisode.Series.QualityProfile.Value.CalculateCustomFormatScore(customFormats);
-
-                if (qualityCompare == 0 && customFormatScore < episodeFileCustomFormatScore)
-                {
-                    _logger.Debug("This file isn't a custom format upgrade for episode. Skipping {0}", localEpisode.Path);
-                    return Decision.Reject("Not a custom format upgrade for existing episode file(s)");
-                }
             }
 
             return Decision.Accept();
         }
-
-        private int GetCustomFormatScore(LocalEpisode localEpisode)
-        {
-            var series = localEpisode.Series;
-            var scores = new List<int>();
-            var fileFormats = new List<CustomFormat>();
-            var folderFormats = new List<CustomFormat>();
-            var clientFormats = new List<CustomFormat>();
-
-            if (localEpisode.FileEpisodeInfo != null)
-            {
-                fileFormats = _customFormatCalculationService.ParseCustomFormat(localEpisode.FileEpisodeInfo);
-            }
-
-            if (localEpisode.FolderEpisodeInfo != null)
-            {
-                folderFormats = _customFormatCalculationService.ParseCustomFormat(localEpisode.FolderEpisodeInfo);
-            }
-
-            if (localEpisode.DownloadClientEpisodeInfo != null)
-            {
-                clientFormats = _customFormatCalculationService.ParseCustomFormat(localEpisode.DownloadClientEpisodeInfo);
-            }
-
-            var formats = fileFormats.Union(folderFormats.Union(clientFormats)).ToList();
-
-            return series.QualityProfile.Value.CalculateCustomFormatScore(formats);
-        }
     }
 }
diff --git a/src/NzbDrone.Core/MetadataSource/SkyHook/Resource/ShowResource.cs b/src/NzbDrone.Core/MetadataSource/SkyHook/Resource/ShowResource.cs
index 76fc0ecd9..4672241c5 100644
--- a/src/NzbDrone.Core/MetadataSource/SkyHook/Resource/ShowResource.cs
+++ b/src/NzbDrone.Core/MetadataSource/SkyHook/Resource/ShowResource.cs
@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 
 namespace NzbDrone.Core.MetadataSource.SkyHook.Resource
 {
@@ -29,6 +29,7 @@ namespace NzbDrone.Core.MetadataSource.SkyHook.Resource
 
         public string Network { get; set; }
         public string ImdbId { get; set; }
+        public string OriginalLanguage { get; set; }
 
         public List<ActorResource> Actors { get; set; }
         public List<string> Genres { get; set; }
diff --git a/src/NzbDrone.Core/MetadataSource/SkyHook/SkyHookProxy.cs b/src/NzbDrone.Core/MetadataSource/SkyHook/SkyHookProxy.cs
index 331a93027..4d4448287 100644
--- a/src/NzbDrone.Core/MetadataSource/SkyHook/SkyHookProxy.cs
+++ b/src/NzbDrone.Core/MetadataSource/SkyHook/SkyHookProxy.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -9,8 +9,10 @@ using NzbDrone.Common.Extensions;
 using NzbDrone.Common.Http;
 using NzbDrone.Core.DataAugmentation.DailySeries;
 using NzbDrone.Core.Exceptions;
+using NzbDrone.Core.Languages;
 using NzbDrone.Core.MediaCover;
 using NzbDrone.Core.MetadataSource.SkyHook.Resource;
+using NzbDrone.Core.Parser;
 using NzbDrone.Core.Tv;
 
 namespace NzbDrone.Core.MetadataSource.SkyHook
@@ -158,6 +160,8 @@ namespace NzbDrone.Core.MetadataSource.SkyHook
             series.CleanTitle = Parser.Parser.CleanSeriesTitle(show.Title);
             series.SortTitle = SeriesTitleNormalizer.Normalize(show.Title, show.TvdbId);
 
+            series.OriginalLanguage = IsoLanguages.Find(show.OriginalLanguage.ToLower())?.Language ?? Language.English;
+
             if (show.FirstAired != null)
             {
                 series.FirstAired = DateTime.ParseExact(show.FirstAired, "yyyy-MM-dd", DateTimeFormatInfo.InvariantInfo, DateTimeStyles.AssumeUniversal | DateTimeStyles.AdjustToUniversal);
diff --git a/src/NzbDrone.Core/Parser/LanguageParser.cs b/src/NzbDrone.Core/Parser/LanguageParser.cs
index 2549b6974..7e1e76f5d 100644
--- a/src/NzbDrone.Core/Parser/LanguageParser.cs
+++ b/src/NzbDrone.Core/Parser/LanguageParser.cs
@@ -27,7 +27,7 @@ namespace NzbDrone.Core.Parser
 
         private static readonly Regex SubtitleLanguageRegex = new Regex(".+?[-_. ](?<iso_code>[a-z]{2,3})([-_. ](?<tags>full|forced|foreign|default|cc|psdh|sdh))*$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
-        public static List<Language> ParseLanguages(string title, bool defaultToEnglish = true)
+        public static List<Language> ParseLanguages(string title)
         {
             foreach (var regex in CleanSeriesTitleRegex)
             {
@@ -175,7 +175,7 @@ namespace NzbDrone.Core.Parser
 
             if (!languages.Any())
             {
-                languages.Add(defaultToEnglish ? Language.English : Language.Unknown);
+                languages.Add(Language.Unknown);
             }
 
             return languages.DistinctBy(l => (int)l).ToList();
diff --git a/src/NzbDrone.Core/Parser/ParsingService.cs b/src/NzbDrone.Core/Parser/ParsingService.cs
index bbdc76156..4deed93c4 100644
--- a/src/NzbDrone.Core/Parser/ParsingService.cs
+++ b/src/NzbDrone.Core/Parser/ParsingService.cs
@@ -6,6 +6,8 @@ using NzbDrone.Common.Extensions;
 using NzbDrone.Common.Instrumentation.Extensions;
 using NzbDrone.Core.DataAugmentation.Scene;
 using NzbDrone.Core.IndexerSearch.Definitions;
+using NzbDrone.Core.Languages;
+using NzbDrone.Core.MediaFiles;
 using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Tv;
 
@@ -182,6 +184,29 @@ namespace NzbDrone.Core.Parser
                 {
                     remoteEpisode.Episodes = GetEpisodes(parsedEpisodeInfo, series, remoteEpisode.MappedSeasonNumber, sceneSource, searchCriteria);
                 }
+
+                parsedEpisodeInfo.ExtraInfo["OriginalLanguage"] = series.OriginalLanguage;
+            }
+
+            // Use series language as fallback if we could't parse a language (more accurate than just using English)
+            if (parsedEpisodeInfo.Languages.Count <= 1 && parsedEpisodeInfo.Languages.First() == Language.Unknown && series != null)
+            {
+                parsedEpisodeInfo.Languages = new List<Language> { series.OriginalLanguage };
+                _logger.Debug("Language couldn't be parsed from release, fallback to series original language: {0}", series.OriginalLanguage.Name);
+            }
+
+            if (parsedEpisodeInfo.Languages.Contains(Language.Original))
+            {
+                parsedEpisodeInfo.Languages.Remove(Language.Original);
+
+                if (series != null && !parsedEpisodeInfo.Languages.Contains(series.OriginalLanguage))
+                {
+                    parsedEpisodeInfo.Languages.Add(series.OriginalLanguage);
+                }
+                else
+                {
+                    parsedEpisodeInfo.Languages.Add(Language.Unknown);
+                }
             }
 
             if (remoteEpisode.Episodes == null)
diff --git a/src/NzbDrone.Core/Tv/RefreshSeriesService.cs b/src/NzbDrone.Core/Tv/RefreshSeriesService.cs
index f34ae0c21..64467ddb1 100644
--- a/src/NzbDrone.Core/Tv/RefreshSeriesService.cs
+++ b/src/NzbDrone.Core/Tv/RefreshSeriesService.cs
@@ -91,6 +91,7 @@ namespace NzbDrone.Core.Tv
             series.ImdbId = seriesInfo.ImdbId;
             series.AirTime = seriesInfo.AirTime;
             series.Overview = seriesInfo.Overview;
+            series.OriginalLanguage = seriesInfo.OriginalLanguage;
             series.Status = seriesInfo.Status;
             series.CleanTitle = seriesInfo.CleanTitle;
             series.SortTitle = seriesInfo.SortTitle;
diff --git a/src/NzbDrone.Core/Tv/Series.cs b/src/NzbDrone.Core/Tv/Series.cs
index cf398cab2..b10ac3de5 100644
--- a/src/NzbDrone.Core/Tv/Series.cs
+++ b/src/NzbDrone.Core/Tv/Series.cs
@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Datastore;
+using NzbDrone.Core.Languages;
 using NzbDrone.Core.Profiles.Qualities;
 
 namespace NzbDrone.Core.Tv
@@ -15,6 +16,7 @@ namespace NzbDrone.Core.Tv
             Actors = new List<Actor>();
             Seasons = new List<Season>();
             Tags = new HashSet<int>();
+            OriginalLanguage = Language.English;
         }
 
         public int TvdbId { get; set; }
@@ -47,6 +49,7 @@ namespace NzbDrone.Core.Tv
         public DateTime Added { get; set; }
         public DateTime? FirstAired { get; set; }
         public LazyLoaded<QualityProfile> QualityProfile { get; set; }
+        public Language OriginalLanguage { get; set; }
 
         public List<Season> Seasons { get; set; }
         public HashSet<int> Tags { get; set; }
diff --git a/src/Sonarr.Api.V3/Series/SeriesResource.cs b/src/Sonarr.Api.V3/Series/SeriesResource.cs
index f7efc9f37..e5e672a0b 100644
--- a/src/Sonarr.Api.V3/Series/SeriesResource.cs
+++ b/src/Sonarr.Api.V3/Series/SeriesResource.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using NzbDrone.Core.Languages;
 using NzbDrone.Core.MediaCover;
 using NzbDrone.Core.Tv;
 using Sonarr.Http.REST;
@@ -30,7 +31,7 @@ namespace Sonarr.Api.V3.Series
         public string Network { get; set; }
         public string AirTime { get; set; }
         public List<MediaCover> Images { get; set; }
-
+        public Language OriginalLanguage { get; set; }
         public string RemotePoster { get; set; }
         public List<SeasonResource> Seasons { get; set; }
         public int Year { get; set; }
@@ -100,6 +101,7 @@ namespace Sonarr.Api.V3.Series
 
                        Seasons = model.Seasons.ToResource(includeSeasonImages),
                        Year = model.Year,
+                       OriginalLanguage = model.OriginalLanguage,
 
                        Path = model.Path,
                        QualityProfileId = model.QualityProfileId,
@@ -161,6 +163,7 @@ namespace Sonarr.Api.V3.Series
 
                        Seasons = resource.Seasons?.ToModel() ?? new List<Season>(),
                        Year = resource.Year,
+                       OriginalLanguage = resource.OriginalLanguage,
 
                        Path = resource.Path,
                        QualityProfileId = resource.QualityProfileId,