Whodunnit?Season 21974 · 6 episodesEpisodes1The Last ActJon Pertwee takes over as the host, and there's a murder on set.2It's Quicker by TrainIn this episode a murder takes place on the night train to Yorkshire.3The Final ChapterA retired General is murdered after completing his memoirs, and then the final chapter disappears.4Goodbye SargeDuring World War I, an unpopular Sargeant is shot, but who killed him?5The Art of TheftThis edition features the theft of a famous painting.6Teddy Bear's PicnicThere is a murder at a fancy dress party.Season 1Season 3Season 4Season 5Season 6