A gambler discovers an old flame while in Argentina, but she's married to his new boss.

A tough marshal with political ambitions leads an elite posse to capture a notorious train robber and his gang.

"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.

After a rare gem is stolen from an exhibition at a posh hotel, Inspector Farraday decides to recruit former thief Boston Blackie to find the stone. Along with his assistant, "The Runt", Blackie focuses his investigation on the hotel manager, George Daley, and his sister, Eileen. Through disguises and ruses, Blackie and the Runt try to trick their way to discovering the thieves.

A man listens to his wife and fakes his own death so that she can get her hands on his insurance policy.

Fred J. Johnson scores a hole-in-one but his next drive, using the lucky, initialed golf ball, soars out of bounds and lands near a spot where some counterfeiters are burying a murder victim. Then begins a series of events in which he is hounded and threatened by the killers. The consequences of his not reporting what he saw to the police lead to a climax in which is daughter is held hostage by the crooks.

A criminal psychiatrist investigates the murder of a two-time widower.

A private eye and her sidekick solve the case of a dead client.

A scrupulously honest lawyer discovers that the client he's gotten off was really guilty.

A maid is left a huge inheritance. She moves in her low-class family, upsetting the relatives of the deceased. They plot to get rid of the entire clan of the Munceys.