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)

Jack Bailey

Witness in Pajamas and Robe (uncredited)

Robert Bice

Detective with Capt. Breen (uncredited)

Garrett Craig

Patrolman (uncredited)

John Dehner

Assistant Bureau Chief (uncredited)

Ann Doran

Dispatcher (uncredited)

Rex Downing

Young Hoodlum (uncredited)

Paul Fierro

Spanish-Speaking Detective (uncredited)

Byron Foulger

Freddie (uncredited)

Kit Guard

Suspect (uncredited)

Harry Harvey

Liquor Store Proprietor (uncredited)

Thomas Browne Henry

Dunning (uncredited)

Virginia Hunter

Miss Smith (uncredited)

Anthony Jochim

Liquor Store Proprietor (uncredited)

Tommy Kelly

Redhead (uncredited)

Donald Kerr

Mailman (uncredited)

Charles Lang

Policeman (uncredited)

Lyle Latell

Police Sergeant (uncredited)

Rory Mallinson

Detective with Harry (uncredited)

Billy Mauch

Handsome (uncredited)

John McGuire

Officer Robert Rawlins (uncredited)

Charles Meredith

Hollywood Police Official (uncredited)

Carlotta Monti

Miss Montavio (uncredited)

Bert Moorhouse

Detective (uncredited)

Howard Negley

Lt. Greeson (uncredited)

James Nolan

Harry (uncredited)

John Parrish

Liquor Store Proprietor (uncredited)

Steve Pendleton

Detective (uncredited)

Paul Scardon

Liquor Store Proprietor (uncredited)

Kenneth Tobey

Detective Questioning Pete (uncredited)

Wally Vernon

Postman (uncredited)

Harlan Warde

Police Operator 27 (uncredited)

Mary Ware

Reeves' Secretary (uncredited)

Harry Wilson

Prison Inmate (uncredited)