Young intern Jeff Burton, impulsively offers a lift to an odd-looking gentlemen. It soon turns out that Jeff's passenger is an inventor has just escaped from a shady sanitarium, where he has been held prisoner by Nazi spies.

The ringmaster of a flea circus inherits a fortune...if he can find which chair it's hidden in.

A murder is committed during the auction of a valuable statue. The prime suspect is Boston Blackie, whose reputation for living on the edge of the law makes him an easy target for the police. When the body disappears, Blackie must find it to prove his innocence.

When newlyweds visit Las Vegas, the wife's shady past comes to the surface.