"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.

Top Cast

Karen MorleyRachel Martin

Jim BannonJack Packard

Jeff DonnellNina Arnold

Mark RobertsReed Cawthorne (as Robert Scott)

Robert WilcoxRichard Arnold

Barton YarboroughDoc Long

James BellEdward Martin

Wilton GraffRalph Martin