Characters played by Ralph Bellamy
Ellery Queen
Characters played by Margaret Lindsay
Nikki Porter
Characters played by Charley Grapewin
Insp. Queen
Characters played by Spring Byington
Carlotta Emerson
Characters played by H.B. Warner
Ray Jardin
Characters played by James Burke
Sgt. Velie
Characters played by Douglass Dumbrille
John Matthews
Characters played by John Beal
Walter Matthews
Characters played by Linda Hayes
Marian Jardin
Characters played by Sidney Blackmer
Anthony Rhodes
Characters played by Walter Kingsford
Henry
Characters played by Honorable Wu
Lee
Characters played by Charles Lane
Dr. Prouty
Characters played by Charles Halton
Rufus Smith
Characters played by Arthur Q. Bryan
Book Salesman
Characters played by Lynton Brent
Auctioneer's Assistant
Characters played by Jack Cheatham
Desk Sergeant
Characters played by Wallis Clark
Harmon
Characters played by Bernard Gorcey
Little Man with Car Tires
Characters played by Frank O'Connor
Moving Man
Characters played by Pat West
Moving Man