Delete is setup, just need to add a link to follow through on the delete.

Removes EpisodeFiles, Episodes, Season and then the Series.

NzbDrone.Core/Providers/DiskProvider.cs

@@ -37,6 +37,11 @@ namespace NzbDrone.Core.Providers
             return Directory.CreateDirectory(path).FullName;
         }
 
+        public void DeleteFile(string path)
+        {
+            File.Delete(path);
+        }
+
         #endregion
     }
 }

NzbDrone.Core/Providers/EpisodeProvider.cs

@@ -21,7 +21,6 @@ namespace NzbDrone.Core.Providers
         private readonly IQualityProvider _quality;
         private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
 
-
         public EpisodeProvider(IRepository sonicRepo, ISeriesProvider seriesProvider, ISeasonProvider seasonProvider, ITvDbProvider tvDbProvider, IHistoryProvider history, IQualityProvider quality)
         {
             _sonicRepo = sonicRepo;
@@ -262,6 +261,11 @@ namespace NzbDrone.Core.Providers
             Logger.Debug("Finished episode refresh for series:{0}. Successful:{1} - Failed:{2} ", targetSeries.SeriesName, successCount, failCount);
         }
 
+        public void DeleteEpisode(int episodeId)
+        {
+            _sonicRepo.Delete<Episode>(episodeId);
+        }
+
         private bool IsSeasonIgnored(EpisodeModel episode)
         {
             //Check if this Season is ignored

NzbDrone.Core/Providers/IDiskProvider.cs

@@ -11,5 +11,6 @@ namespace NzbDrone.Core.Providers
         string[] GetFiles(string path, string pattern, SearchOption searchOption);
         bool FileExists(string path);
         long GetSize(string path);
+        void DeleteFile(string path);
     }
 }

NzbDrone.Core/Providers/IEpisodeProvider.cs

@@ -22,5 +22,6 @@ namespace NzbDrone.Core.Providers
         void RefreshEpisodeInfo(int seriesId);
         void RefreshEpisodeInfo(Season season);
         IList<Episode> GetEpisodeBySeason(long seasonId);
+        void DeleteEpisode(int episodeId);
     }
 }

NzbDrone.Core/Providers/IMediaFileProvider.cs

@@ -13,5 +13,7 @@ namespace NzbDrone.Core.Providers
 
         EpisodeFile ImportFile(Series series, string filePath);
         string GenerateEpisodePath(EpisodeModel episode);
+        void DeleteFromDb(int fileId);
+        void DeleteFromDisk(int fileId, string path);
     }
 }

NzbDrone.Core/Providers/ISeasonProvider.cs

@@ -12,5 +12,6 @@ namespace NzbDrone.Core.Providers
         int SaveSeason(Season season);
         bool IsIgnored(int seasonId);
         bool IsIgnored(int seriesId, int seasonNumber);
+        void DeleteSeason(int seasonId);
     }
 }

NzbDrone.Core/Providers/ISeriesProvider.cs

@@ -25,5 +25,6 @@ namespace NzbDrone.Core.Providers
         Series FindSeries(string cleanTitle);
         bool QualityWanted(int seriesId, QualityTypes quality);
         void UpdateSeries(Series series);
+        void DeleteSeries(int seriesId);
     }
 }

NzbDrone.Core/Providers/MediaFileProvider.cs

@@ -112,6 +112,17 @@ namespace NzbDrone.Core.Providers
             return String.Format(episodeNamePattern, episode.SeriesTitle, episode.EpisodeNumber, episode.SeasonNumber, episode.EpisodeTitle, episode.Quality);
         }
 
+        public void DeleteFromDb(int fileId)
+        {
+            _repository.Delete<EpisodeFile>(fileId);
+        }
+
+        public void DeleteFromDisk(int fileId, string path)
+        {
+            _diskProvider.DeleteFile(path);
+            _repository.Delete<EpisodeFile>(fileId);
+        }
+
         private List<string> GetMediaFileList(string path)
         {
             Logger.Debug("Scanning '{0}' for episodes", path);

NzbDrone.Core/Providers/SeasonProvider.cs

@@ -71,5 +71,10 @@ namespace NzbDrone.Core.Providers
             Logger.Debug("Season: {0} is not wanted for Series: {1}", seasonNumber, seriesId);
             return true;
         }
+
+        public void DeleteSeason(int seasonId)
+        {
+            _sonicRepo.Delete<Season>(seasonId);
+        }
     }
 }

NzbDrone.Core/Providers/SeriesProvider.cs

@@ -22,9 +22,11 @@ namespace NzbDrone.Core.Providers
         private readonly IRepository _sonioRepo;
         private readonly ITvDbProvider _tvDb;
         private readonly IQualityProvider _quality;
+
         private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
 
-        public SeriesProvider(IDiskProvider diskProvider, IConfigProvider configProvider, IRepository dataRepository, ITvDbProvider tvDbProvider, IQualityProvider quality)
+        public SeriesProvider(IDiskProvider diskProvider, IConfigProvider configProvider,
+            IRepository dataRepository, ITvDbProvider tvDbProvider, IQualityProvider quality)
         {
             _diskProvider = diskProvider;
             _config = configProvider;
@@ -122,6 +124,26 @@ namespace NzbDrone.Core.Providers
             _sonioRepo.Update(series);
         }
 
+        public void DeleteSeries(int seriesId)
+        {
+            var series = _sonioRepo.Single<Series>(seriesId);
+
+            //Delete Files, Episdes, Seasons then the Series
+            //Can't use providers because episode provider needs series provider - Cyclic Dependency Injection, this will work
+
+            Logger.Debug("Deleting EpisodeFiles from DB for Series: {0}", series.SeriesId);
+            _sonioRepo.DeleteMany(series.Files);
+
+            Logger.Debug("Deleting Episodes from DB for Series: {0}", series.SeriesId);
+            _sonioRepo.DeleteMany(series.Episodes);
+
+            Logger.Debug("Deleting Seasons from DB for Series: {0}", series.SeriesId);
+            _sonioRepo.DeleteMany(series.Seasons);
+
+            Logger.Debug("Deleting Series from DB {0}", series.Title);
+            _sonioRepo.Delete<Series>(seriesId);
+        }
+
         #endregion
 
         #region Static Helpers

NzbDrone.Web/Controllers/SeriesController.cs

@@ -181,5 +181,13 @@ namespace NzbDrone.Web.Controllers
             _seriesProvider.UpdateSeries(series);
             return Content("Series Updated Successfully");
         }
+
+        public ActionResult Delete(int seriesId)
+        {
+            //Need to add seriesProvider.Update
+            _seriesProvider.DeleteSeries(seriesId);
+
+            return RedirectToAction("Index", "Series");
+        }
     }
 }