The Rivals of Sherlock Holmes Adaptations of mystery stories written by Sir Arthur Conan Doyle's contemporary rivals in the genre. Details Casts Galleries Posters Season Lists Title The Rivals of Sherlock Holmes Genres Crime Drama Mystery First Air Date 1971-09-20 Last Air Date 1973-05-07 Episode Runtime 00 Hours 50 Minutes Total Season(s) 2 Total Episode(s) on All Seasons 26 Runtime 50 Production Companies Pearson Television International, Thames Television Original Size (1280x720) Original Size (960x1440) Original Size (500x750) Original Size (853x1236) Original Size (1063x1500) Original Size (680x1000) Season 1 13 Episode(s) 1971-09-20 Season 2 13 Episode(s) 1973-01-29