Richard Basehart (34)

Roy Martin / Roy Morgan

Scott Brady (24)

Police Sgt. Marty Brennan

Roy Roberts (42)

Police Captain Breen

Whit Bissell (39)

Paul Reeves

James Cardwell (28)

Police Sgt. Chuck Jones

Jack Webb (28)

Lee Whitey

Reed Hadley (37)

Narrator (voice) (uncredited)

Frank Cady (33)

Pete Hammond

Dorothy Adams (49)

Milk Customer

Jane Adams (30)

Nurse Scanion (uncredited)

Jack Bailey (41)

Witness in Pajamas and Robe (uncredited)

Alma Beltran (29)

Miss Montalvo (uncredited)

Robert Bice (34)

Detective with Capt. Breen (uncredited)

Dolores Castelli

Witness (uncredited)

George Chan

Chinese Suspect (uncredited)

Garrett Craig (32)

Patrolman (uncredited)

John Dehner (33)

Assistant Bureau Chief (uncredited)

Ann Doran (37)

Dispatcher (uncredited)

Rex Downing (23)

Young Hoodlum (uncredited)

Michael Dugan (36)

Patrolman (uncredited)

Paul Fierro (33)

Spanish-Speaking Detective (uncredited)

Byron Foulger (50)

Freddie (uncredited)

Kay Garrett (55)

Doctor (uncredited)

Tim Graham (44)

Uniformed Sergeant (uncredited)

Kit Guard (54)

Suspect (uncredited)

Harry Harvey (48)

Liquor Store Proprietor (uncredited)

Thomas Browne Henry (41)

Dunning (uncredited)

Peter Hobbes

Milkman (uncredited)

Virginia Hunter (28)

Miss Smith (uncredited)

Felice Ingersoll

Records Clerk (uncredited)