Harry Morgan
Officer Bill Gannon

Jack Webb
Sergeant Joe Friday

Don Ross
Carl Freeman / Sgt. Dick Reed / Sgt. Doherty / Eugene Dickson / Tom Evans / Don ...

Art Balinger
Capt. Hugh Brown / Capt. Lou Richey / Capt. Ken Green / Capt. Lambert / Capt. Mc...

Alfred Shelly
Sgt. Al Vietti / Detective at house on phone (uncredited) / Jack Swan / Sgt. Han...

Virginia Gregg
Lisa Ruby / Mrs. Mascall / Agnes Emerson / Mrs. Smith / Mrs. Francine Graham / D...

John Stephenson
Narrator (voice) (uncredited)

Len Wayland
Capt. Morris / Capt. Stanley / Walt Aldrich / Sgt. Al Maxwell / Jack Courtney / ...

Art Gilmore
Capt. Lambert / Lt. Moore / Capt. Mert Howe / Capt. Merton Howe / Capt. Hugh Bro...

Herb Vigran
Desk Clerk / Al Sousa / Paul Woods / Pete Gulka / Erv Fowler / John Hagen / Mr. ...

Stacy Harris
Dan Mungol / Michael Cooper Smith / Dr. Manning / Frank Baker / Clifford Ray Owe...

Marshall Reed
Sgt. Hughes / Fred Deemer / Sgt. Norman Bivins / Lt. Phil Johnson / Officer Whit...

Robert Patten
Sgt. Jack Williams / Officer Young / Off. Louis J. Sale / Sgt. Taylor Searcy / S...

Anthony Eisley
Al Baylor / Thomas Dutcher / Fred Wayman / Lt. Chris Drucker / Harvey Forrester

Howard Culver
Sam Enquist / Dr. Larry Fields / Pete Stuart / Matt Levecque

Julie Bennett
Jan Petrie / Susan Fowler / Evelyn Gentry / Angela Tigley

Natalie Masters
Housewife / Mrs. Ridges / Landlady

Elaine Devry
Irene Gorman / Maggie Hinton / Patricia Wingate

Eve Brent
Mrs. Carver / Mrs. Fuller / Sgt. Connie Speck

Bobby Troup
Claude Stroup / Richard Clinger / Harry Mahan