Roy Martin / Roy Morgan

Richard Basehart

Sgt. Marty Brennan

Scott Brady

Capt. Breen

Roy Roberts

Paul Reeves

Whit Bissell

Lee Whitey

Jack Webb

Police Sgt. Chuck Jones

James Cardwell

Narrator (voice) (uncredited)

Reed Hadley

Detective with Capt. Breen (uncredited)

Robert Bice

Himself

Chief Bradley

Pete Hammond

Frank Cady

Officer Robert Rawlins (uncredited)

John McGuire

Milk Customer

Dorothy Adams

Dunning (uncredited)

Thomas Browne Henry

Police Sergeant (uncredited)

Lyle Latell

Nurse Scanion (uncredited)

Jane Adams

Witness in Pajamas and Robe (uncredited)

Jack Bailey

Patrolman (uncredited)

Michael Dugan

Miss Montalvo (uncredited)

Alma Beltran

Patrolman (uncredited)

Garrett Craig

Witness (uncredited)

Dolores Castelli

Detective (uncredited)

Bert Moorhouse

Detective

Gaylord 'Steve' Pendleton

Chinese Suspect (uncredited)

George Chan

Detective Questioning Pete (uncredited)

Kenneth Tobey

Detective (uncredited)

Robert B. Williams

Assistant Bureau Chief (uncredited)

John Dehner

Detective

Doyle Manor

Dispatcher (uncredited)

Ann Doran

Young Hoodlum (uncredited)

Rex Downing

Detective

Jim Nolan

Detective with Harry (uncredited)

Rory Mallinson

Business Suspect

Bernard Suss

Spanish-Speaking Detective (uncredited)

Paul Fierro

Freddie (uncredited)

Byron Foulger

Fighter Suspect

George Goodman

Doctor (uncredited)

Kay Garrett

Uniformed Sergeant (uncredited)

Tim Graham

Miss Montavio (uncredited)

Carlotta Monti

Mrs. Rawlins (uncredited)

Louise Kane

Suspect (uncredited)

Kit Guard

Liquor Store Proprietor (uncredited)

Harry Harvey

Receptionist

Florence Stephens

Milkman (uncredited)

Peter Hobbes

Miss Smith (uncredited)

Virginia Hunter

Records Clerk (uncredited)

Felice Ingersoll

Liquor Store Proprietor (uncredited)

Anthony Jochim

Mrs. Rapport

Ruth Robinson

Artist (uncredited)

Stan Johnson

Liquor Store Proprietor (uncredited)

John Parrish

Kelly

Earl Spainard

Redhead (uncredited)

Tommy Kelly

Mailman (uncredited)

Donald Kerr

Policeman (uncredited)

Charles Lang

Handsome (uncredited)

Billy Mauch

Postman

Wally Vernon

Hollywood Police Official (uncredited)

Charles Meredith

Mailman

Dick Mason

Lt. Greeson (uncredited)

Howard Negley

Reeves' Secretary (uncredited)

Mary Ware

Police Operator 27 (uncredited)

Harlan Warde

Young Hoodlum (uncredited)

John Perri

Young Hoodlum (uncredited)

Paul Perri

Liquor Store Proprietor (uncredited)

Paul Scardon

Prison Inmate (uncredited)

Harry Wilson