Movie Cast (21)

• 

  Ralph Bellamy

  Ellery Queen

• 

  Margaret Lindsay

  Nikki Porter

• 

  Charley Grapewin

  Insp. Queen

• 

  James Burke

  Sgt. Velle

• 

  Michael Whalen

  Dr. James Rogers

• 

  Marsha Hunt

  Barbara Braun

• 

  Fred Niblo

  John Braun

• 

  Charles Lane

  Dr. Prouty

• 

  Ann Shoemaker

  Lydia Braun

• 

  Marion Martin

  Cornelia

• 

  Douglas Fowley

  Rocky Taylor

• 

  Morgan Wallace

  Zachary

• 

  Byron Foulger

  Amos

• 

  Katherine DeMille

  Valerie Norris

• 

  Peter Bronte

  Doctor's Assistant (uncredited)

• 

  Jack Cheatham

  Desk Sergeant (uncredited)

• 

  Arthur Millett

  Elevator Guard (uncredited)

• 

  Frank O'Connor

  Ambulance Driver (uncredited)

• 

  Lee Phelps

  Flynn (uncredited)

• 

  Jack Rice

  Rogers' Assistant (uncredited)

• 

  Alan Ladd

  Elevator Passenger (uncredited) (unconfirmed)

Movie Crew (5)