In order to win back his girlfriend, Mike Shayne promises to give up his detective practice and get a job as riveter in an aircraft plant. He quickly finds himself investigating the theft of industrial diamonds from the plant's safe and, utilizing a variety of false identities, traces them first to a dress factory and later to a Hawaii-bound ocean liner. Escaping several attempts on his life, he is able to uncover a Nazi smuggling ring, but the location of the missing diamonds continues to elude him.

A man believed to be dead and buried escapes from his grave and returns to the scene of the crime seeking revenge.

Compassionate small-town lawyer Richard Clarke moves to New York City to seek his fortune, but is unsuccessful until he takes a friend's advice and tries to convince the world he's a ruthless heel. Suddenly he's the most popular lawyer in town -- but he could lose his fiancée.

Reformed jewel thief Simon Templar lands in hot water when a look-alike smuggles stolen goods out of Egypt.