Ex-convict Hank Rogers is searching for his brother Jim, a newspaperman, and becomes involved with a group of people trying to conceal the death of the president of a large corporation so they can profit financially. With the aid of the dead man's daughter, Audrey Brandon, Hank exposes the crooks.

Young artist Monte Crandell is being sued for an unauthorized caricature. To escape arrest, he disguises himself as a mystic, only to conjure up a genuine ghost during a seance. Things come to a head during his trial, where the invisible ghost takes the witness stand on Our Hero's behalf.

A London curator loses the Mona Lisa to a collector, who discovers it's a fake.

While on shore leave to celebrate his first anniversary, Lt. Peter Duluth (Warren Douglas) takes his wife, Iris (Audrey Long), to a Los Angeles hotel but is turned away. When mysterious Colette (Stephanie Bachelor) offers them her suite, the young couple becomes entangled in a murder plot. Aided by two PIs, Peter and Iris find two corpses and are desperate to locate Colette before she becomes the next victim, but the killers are one step ahead.

A private detective is offered a job protecting a rich business man from suspected blackmail. Before he can accept the case a murder is uncovered.