Inside No. 9 - Season 3 - Duplicate Episode
The episode "Private View" of Season 3 of "Inside No. 9" is listed twice as episode 5 and episode 6. This is because special 2 "The Devil of Christmas" is sometimes included in season 3 before "The Bill". Either episode 6 should be removed (likely) or Special 2 should be moved into 3x01 and each subsequent episode moved up one.
The TMDB link on 3x06 is currently broken, and the IMDB and TVDB links are the same for 3x05.
Somewhat related: the thumbnails for Special 1 and Special 2 are swapped, likely because they are in different orders on TVDB and TMDB.