MysteryThrillerHorror6060MysteryThrillerHorrorthumb_upthumb_downThe UnknownJuly 4, 1946Directed byHenry Levin"The Unknown" was the final entry in Columbia’s I Love A Mystery series. A woman hires two detectives to keep her alive long enough to claim her inheritance.US content warning Last Updated: 8 days ago Request Update I Love a Mystery CollectionI Love a Mystery1945The Devil's Mask1946The Unknown1946 CastKaren MorleyRachel MartinJim BannonJack PackardJeff DonnellNina ArnoldMark RobertsReed Cawthorne (as Robert Scott)Robert WilcoxRichard ArnoldBarton YarboroughDoc LongJames BellEdward MartinWilton GraffRalph MartinHelen FreemanPhoebe MartinRobert KellardJames Wetherford (as Robert Stevens)J. Louis JohnsonJoshua (uncredited) Image Gallery RecommendedFlorence Fight ClubStrange ObjectZombie Fight ClubFight ClubNot Found - Forbidden Videos Removed from the Net - Best Selection by Staff Part 6Jim's StoryCaptain NulleTwo Evil Eyes12FilmQueens of DramaGCW Fight ClubSIX AMMaxxie LaWow: Drag Super-sheroFight Club (Russian version)