Millard Mitchell (James T. Connie)Gilbert Roland (Punch Pinero)John Beal (Doc)Marshall Thompson (Blivens Scott)Alf Kjellin (Clem Randall)Harry Morgan (Dawson)Jay Adler (Steve Kopac)Regis Toomey (Dr. Gordon)Fay Roope (Warden)Carleton Young (Capt. Haggarty)John Marley (Knotty Johnson)Russ Conway (Dr. Hughes)Byron Foulger (Dr. Brint)Charles Bronson (Jocko)Wesley Addy (Bit Role)Jack Carr (Harry Higgins)Dick Cogan (Convict #2)Dick Curtis (Guard)
A psychologist pioneers a research study at a prison. He seeks the help of six savvy inmates including a safe-cracker, a mobster, a pair of armed robbers and psychopath. Could he trust them? What's in it for them?