Richard Diamond, Private Detective

Richard Diamond / Chuck Garrett

Sgt. Alden

Lt. Pete Kile / Lieutenant Kile

Lt. Dennis McGough

Otto Carl / Clifton

Green / Frank

Charlie Wendell / Arnie Bullock

Claire Toujours / Babs Felt

Harriet Barnes / Bunny

Norman Dewitt / Bill Reade

Sgt. Riker

Paul Schofield / Brother Joshua

Willie Gibson / Steve Gorgas

Johnson / George

Edna Shaw / Dr. Tesla

Johnny Prescott (uncredited) / Charlie Kane

Emilio Tomas / Axel

Laura Renault / Winifred O'Hara

Bartender / Joe

Frank Bonner / Tim Wilson

Rudi Trekhala / Mickey Farmer

Joey Kane / Warburton Flagge

Gerald Clayton / Stuart Simons

Mike Gower / Joel Finlay