Richard Basehart

Roy Martin / Roy Morgan

Scott Brady

Police Sgt. Marty Brennan

Roy Roberts

Police Captain Breen

Whit Bissell

Paul Reeves

James Cardwell

Police Sgt. Chuck Jones

Jack Webb

Lee Whitey

Reed Hadley

Narrator (voice) (uncredited)

Frank Cady

Pete Hammond

Dorothy Adams

Milk Customer

Jane Adams

Nurse Scanion (uncredited)