This MGM Crime Does Not Pay series short shows the role the crime laboratory plays in the solving of cases, and how even the smallest detail can become a major clue.
A mad doctor named Zanoff uses a drug to bring himself back from the dead after his execution in prison. Dick Tracy sets out to capture Zanoff before he can put his criminal gang back together again.
A cop pretends to be a crook in order to catch a gang of outlaws. The bad guys run a night club as a front. The cop's sister helps him by singing there; otherwise, she's busy making love to a military cadet.
A radio salesman is trying to sell some gypsies a radio. But they have their easy to operate crystal ball, that even works as a TV. They show him how easy it works by listening to the doings of the Rhythm Boys, Tito Guizar, the Picken Sisters and Ann Lee, and let him try to receive a Frank Hazard...
