Richard Diamond, Private Detective

Richard Diamond / Chuck Garrett

Sgt. Alden

Lt. Pete Kile / Alec Bruce

Lt. Dennis McGough

Otto Carl / Clifton

Green / Frank

Larry / Charlie Wendell

Claire Toujours / Sally

Harriet Barnes / Mindy Parker

Norman Dewitt / Bill Reade

Sgt. Riker

Brother Joshua / Ted Anthony

Thug (uncredited) / Willie Gibson

George / Johnson

Dr. Tesla / Edna Shaw

Johnny Prescott (uncredited) / Charlie Kane

Emilio Tomas / Axel

Laura Renault / Winifred O'Hara

Joe / Bartender

Frank Bonner / Tim Wilson

Mickey Farmer / Rudi Trekhala

Warburton Flagge / Joey Kane

Stuart Simons / Gerald Clayton

Mike Gower / Joel Finlay