[4] Bill is a good citizen, trying to help his ex-professional boxer brother, Arnie, convicted of murder, escape from San Quentin State Prison to return to Arnie's wife, Ruth, played by Lang.

[5] The movie was filmed on location at San Quentin and set in San Quentin and Mill Valley, California, then the home city of author Finney.

[6] Arnie Judlow (Jack Palance) is an imprisoned gangster.

During a prison visit, Bill Judlow, his law-abiding brother, switches places, allowing himself to be incarcerated as the real criminal walks free.

[7] According to MGM records the film earned $500,000 in the US and Canada and $600,000 elsewhere, resulting in a loss of $92,000.