Experiment Alcatraz

John Howard

Dr. Ross Williams

Joan Dixon

Lt. Joan McKenna

Walter Kingsford

Dr. J.P. Finley

?

Lynne Carter

Ethel Ganz

Robert Shayne

Barry Morgan

Kim Spalding

Duke Shaw

?

Sam Scar

Eddie Ganz

Kenneth MacDonald

Col. Harris

Dick Cogan

Dan Staley

Frank Cady

Max Henry

Byron Foulger

Jim Carlton, Realtor

Ralph Peters

Bartender

Lewis Martin

Asst. District Attorney Walton (as Louis Martin)

Harry Lauter

Richard 'Dick' McKenna

Raymond Largay

Warden Keaton