Ellery Queen, Master Detective Oyuncuları

Yönetmen	Kurt Neumann
Oyuncu
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)
Jimmy the Crow
Senaryo
Eric Taylor
Görüntü Yönetmeni
James S. Brown Jr.
Hikaye
Frederic Dannay , Manfred Lee
Üretim Hizmetleri
Larry Darmour
Sinematografi
James S. Brown Jr.
İkinci Birim
Carl Hiecke
Müzik
Lee Zahler
Genel
Dwight Caldwell