After a former model is drowned in her bathtub, Detective James Halloran and Lieutenant Dan Muldoon attempt to piece together her murder.

Catherine Sykes disappears after a midnight drive with Professor Andrew Gentling . When she's presumed murdered, his friend Martha convinces him that he's a prime suspect and should investigate before he's arrested.

Rick Mason is the no-good lowdown rat who tries to capitalize on postwar patriotism and grief. He finagles a war widow into giving up her savings for a nonexistent memorial. When Mason falls in love with the widow he has pangs of conscience, but he reckons without his con-artist boss, who tends to bolster his arguments with muscle and bullets.

A fact-based story about a man who posed as an American Communist for years as part of a secret plan to infiltrate their organization.

Molly's husband Rick was a gang leader somewhere in the middle west. When he's shot, the tough woman moves to S.F. with a couple of the gang to start anew. Disguised as a noble woman, she and her gang rob security transports. But when one day Rob confesses to her that he killed Rick out of jealousy, she shoots him down immediately. In lack of proof she can't be convicted for the murder, but she goes to jail for the robberies. It's a new and very open female prison, where she learns a profession for the first time in her life.

A vicious loan shark ring has been preying on factory workers. When several workers at a tire factory suffer violence at the hands of the loan sharkers, a union leader and the factory owner try to recruit ex-con Joe Gargan to infiltrate to the gang. At first Joe does not want to get involved, but changes his mind when his brother-in-law dies at the hands of a savage loan shark hood. Joe works his way into the mob, but in order to keep his cover, Joe can't tell anyone what he is up to. This results in him being disowned by his sister and girl friend.

Larry Nelson, paroled from prison after serving nearly half of his thirty-year sentence, is determined to not fall into the clutches of the law again, and takes a quiet job at a country sanitarium. Thete, he meets and falls for a nurse, Charlotte Maynard, and he knows the only way to enter her web is to have a lot of money, for Miss Maynard is somewhat of a gold-digger.

The jungle king's cousin tries to get him to help find a diamond treasure.

Undertow stars Scott Brady as a gambler just out of wartime military service. No longer interested in wagers and speculations, Brady wants only to open up a mountain vacation lodge. Before this can take place, Brady is framed for murder, and forced to hide out in the home of Peggy Dow. With the help of Dow and a policeman friend, Brady searches for the real murderer. Watch carefully in Undertow and you'll spot new Universal contractee "Roc" Hudson as a plainclothes detective.

A warden and his assistant clash over prison reform, triggering a violent riot.