Jack Webb
Sergeant Joe Friday
Ben Alexander
Officer Frank Smith
Richard Boone
Capt .James E. Hamilton
Ann Robinson
Officer Grace Downey
Stacy Harris
Max Edward Troy
Virginia Gregg
Mrs. Ethel Starkie
Vic Perrin
Deputy D.A. Adolph Alexander
Georgia Ellis
Belle Davitt
James Griffith
Jesse Quinn
Dick Cathcart
Roy Cleaver
Malcolm Atterbury
Lee Reinhard
Willard Sage
Chester Davitt
Olan Soule
Ray Pinker
Dennis Weaver
Capt. R.A. Lohrman
Herb Vigran
Mr. Archer
Virginia Christine
Mrs. Caldwell
James Anderson
Fred Kemp
Cliff Arquette
Charley Weaver
Harry Bartell
Lt. Stevens
Bert Holland
Narrator (voice)
Harry Lauter
Officer Greeley
Bert Stevens
DA S. Ernest Roll
Dub Taylor
Miller Starkie
George Sawaya
McQueen
Meg Myles
Singer at Talent Agency (uncredited)