Burt Lancaster

Character: Joe Collins

Hume Cronyn

Character: Capt. Munsey

Charles Bickford

Character: Gallagher

Yvonne De Carlo

Character: Gina Ferrara

Ann Blyth

Character: Ruth

Ella Raines

Character: Cora Lister

Anita Colby

Character: Flossie

Sam Levene

Character: Louie Miller #7033

Jeff Corey

Character: 'Freshman' Stack

John Hoyt

Character: Spencer

Jack Overman

Character: Kid Coy

Roman Bohnen

Character: Warden A.J. Barnes

Sir Lancelot

Character: Calypso

Vince Barnett

Character: Muggsy

Jay C. Flippen

Character: Hodges (guard)

Richard Gaines

Character: McCollum

Frank Puglia

Character: Ferrara

James Bell

Character: Crenshaw

Howard Duff

Character: Robert 'Soldier' Becker

Art Smith

Character: Dr. Walters

Whit Bissell

Character: Tom Lister

James O'Rear

Character: Wilson

Paul Bryar

Character: Harry (uncredited)

Gino Corrado

Character: Italian Father Visiting Prison (uncredited)

Al Ferguson

Character: Guard (uncredited)

Jack Gordon

Character: Convict (uncredited)

John Harmon

Character: Roberts (uncredited)

Herbert Heywood

Character: Chef (uncredited)

Tom Steele

Character: Tom - Tower Guard (uncredited)

Ray Teal

Character: Jackson - Guard (uncredited)

Dale Van Sickel

Character: Guard in Machine Shop (uncredited)

Rudy Germane

Character: Convict (uncredited)