Fixed: Cleanup orphaned movies

src/NzbDrone.Core/Housekeeping/Housekeepers/CleanupOrphanedMovies.cs

@@ -0,0 +1,25 @@
+using Dapper;
+using NzbDrone.Core.Datastore;
+
+namespace NzbDrone.Core.Housekeeping.Housekeepers
+{
+    public class CleanupOrphanedMovies : IHousekeepingTask
+    {
+        private readonly IMainDatabase _database;
+
+        public CleanupOrphanedMovies(IMainDatabase database)
+        {
+            _database = database;
+        }
+
+        public void Clean()
+        {
+            using var mapper = _database.OpenConnection();
+            mapper.Execute(@"DELETE FROM ""Movies""
+                             WHERE ""Id"" IN (
+                             SELECT ""Movies"".""Id"" FROM ""Movies""
+                             LEFT OUTER JOIN ""MovieMetadata"" ON ""Movies"".""MovieMetadataId"" = ""MovieMetadata"".""Id""
+                             WHERE ""MovieMetadata"".""Id"" IS NULL)");
+        }
+    }
+}

src/NzbDrone.Core/Movies/ShouldRefreshMovie.cs

@@ -19,7 +19,12 @@ namespace NzbDrone.Core.Movies
 
         public bool ShouldRefresh(MovieMetadata movie)
         {
-            // return false;
+            if (movie == null)
+            {
+                _logger.Warn("Movie metadata does not exist, should not be refreshed.");
+                return false;
+            }
+
             if (movie.LastInfoSync < DateTime.UtcNow.AddDays(-180))
             {
                 _logger.Trace("Movie {0} last updated more than 180 days ago, should refresh.", movie.Title);

src/Radarr.Api.V3/Movies/MovieController.cs

@@ -214,7 +214,15 @@ namespace Radarr.Api.V3.Movies
                 };
             }
 
-            translations.TryGetValue(movie.Id, out var translation);
+            if (!translations.TryGetValue(movie.Id, out var translation))
+            {
+                translation = new MovieTranslation
+                {
+                    Title = movie.Title,
+                    Language = Language.English
+                };
+            }
+
             return translation;
         }