A wealthy playboy is found murdered in his penthouse, and a suspect claims responsibility, asking the detective to keep a key for him until after his acquittal. The motive for the killing is revealed to be the playboy's affair with the suspect's wife. However, just as the case seems solved, the suspect is found poisoned in his jail cell, leading the detective to suspect his own attorney of being the killer.
Devil's Cargo
This 1944 film is a low-budget sequel to the The Falcon series, featuring a dull murder mystery plot that highlights the protagonist's skills as a magician.