Nick Adams

Character: John Dillinger

Robert Conrad

Character: 'Pretty Boy' Floyd

John Ashley

Character: 'Baby Face' Nelson

Dan Terranova

Character: John Hamilton

Mary Ann Mobley

Character: Elaine

Victor Buono

Character: Prof. Hofman

John Hoyt

Character: Dr. Wilson

Anthony Caruso

Character: Rocco

Reed Hadley

Character: Federal Agent Parker

Art Baker

Character: Warden

Emile Meyer

Character: Det. Jergins

Robert Osterloh

Character: Federal Agent Baum

Gene Roth

Character: Herman, Justice of the Peace

Frank Gerstle

Character: Watchman

Wally Rose

Character: Guard

Walter Sande

Character: Judge

Joy Harmon

Character: Nelson's Girl

Beverly Powers

Character: Floyd's Girl (as Beverly Hills)

Ted Knight

Character: Johnsyn

Paul Genge

Character: Police Detective