Characters played by Ralph Bellamy
Ellery Queen
Characters played by Margaret Lindsay
Nikki Porter
Characters played by Charley Grapewin
Insp. Queen
Characters played by James Burke
Sgt. Velle
Characters played by Michael Whalen
Dr. James Rogers
Characters played by Marsha Hunt
Barbara Braun
Characters played by Fred Niblo
John Braun
Characters played by Charles Lane
Dr. Prouty
Characters played by Ann Shoemaker
Lydia Braun
Characters played by Marion Martin
Cornelia
Characters played by Douglas Fowley
Rocky Taylor
Characters played by Morgan Wallace
Zachary
Characters played by Byron Foulger
Amos
Characters played by Katherine DeMille
Valerie Norris
Characters played by Peter Bronte
Doctor's Assistant
Characters played by Jack Cheatham
Desk Sergeant
Characters played by Jimmy the Crow
The Raven
Characters played by Alan Ladd
Elevator Passenger
Characters played by Arthur Millett
Elevator Guard
Characters played by Frank O'Connor
Ambulance Driver
Characters played by Lee Phelps
Flynn
Characters played by Jack Rice
Rogers' Assistant