Reporter Jane Arden goes undercover to try to expose a gang of jewel thieves and smugglers. Her mission becomes more dangerous when her identity is discovered early on by one of the gang leaders.

A detective courts a gangster's ex-wife to lure him into a trap.

Eying a large inheritance, a reporter marries a rich woman with failing health. When she begins feeling healthy after the wedding, the reporter takes drastic measures to make sure his wife dies.

The story of Dr. Charles Randolph, a scientist dedicated to deciphering the secrets of life and death. Aided by assistant David Cochran, Charles conducts experiments that have horrifying side effects. Charles's lonely wife, Elaine, is frightened by his work, and in order to protect her, housekeeper Maria unleashes a torrent of voodoo that wrecks havoc.

Hank Wilson is a driver for a truck for a big transportation company which is in financial straits. He is in love with Doris Lacy, a waitress at the truck-stop where the company has its truck fleet serviced. Frequent accidents near the place leads the company to hire a private detective to investigate, and when the detective is murdered Hank is arrested as a suspect. The insurance company that covers the fleet has him released and he is sent back to work with instructions to investigate the accidents on his own. The trail leads to the uncle of Doris, and one of the part-owners of the company.