Revolt in the Big House

Three criminals plan to break out of prison the day before their release in order to carry out a daring jewel robbery, intending to establish the perfect alibi by returning to jail afterwards. First however they must get out, a task made more difficult by a new, stricter prison officer.

A savings-and-loan bank is robbed; later, a police wiretap identifies meek bank teller Leon Poole as the inside man. In capturing him, detective Sam Wagner accidentally kills Poole's young wife, and at his trial Poole swears vengeance against Wagner. Poole begins his plans to get revenge when he escapes his captors.

An escaped convict, injured during a robbery, falls in love with the woman who nurses him back to health, but their relationship seems doomed from the beginning.

Recently paroled from prison, legendary burglar "Doc" Riedenschneider, with funding from Alonzo Emmerich, a crooked lawyer, gathers a small group of veteran criminals together in the Midwest for a big jewel heist.

Detective Guy Johnson's client, Willie Heywood, is framed for murder. While Guy hides him so he can catch the real killer, both of them are nabbed by the police, tried, convicted and sentenced to jail: Guy for a year with Willie to be executed. On the way to jail, Guy comes across a clue and escapes from the police.

Brash hoodlum Tom Connors enters Sing Sing cocksure of himself and disrespectful toward authority, but his tough but compassionate warden changes him.