"Ellery Queen solves a mystery involving a valuable stamp."
Eddie Quillan
as Ellery Queen
Charlotte Henry
as Josephine Temple
Rita La Roy
as Martha Kirk
Wade Boteler
as Inspector Queen
Franklin Pangborn
as Mellish
George Irving
as Dr. Alexander Kirk
Kay Hughes
as Irene Kirk
William Newell
as Detective Guffy
George Walcott
as Donald Trent
Edwin Stanley
as Howard Bronson
Edgar Allen
as Detective
Richard Beach
as Reporter
Monte Vandergrift
Grace Durkin
as Girl on Street Corner
June Johnson
as Girl at Cocktail Bar
Mary Bovard
Marc Cramer
as Hotel Desk Clerk
Lester Dorr
as Reporter at Dock
Charles McAvoy
as Officer Jones
Walter Merrill
as Craig the Thief
Frank O'Connor
Vesey O'Davoren
as Mason
Carleton Young
as Drunk
Mary Russell
Ralph Staub
Director
Rex Taylor
Screenplay
Nat Levine
Producer
Manfred Lee
Original Story
Gertrude Orr
Cortland Fitzsimmons
Victor Zobel
Eloise
Costume Design
Heinz Roemheld
Original Music Composer
Milan Roder
Harry Grey
Music
Frederic Dannay
Murray Seldeen
Supervising Film Editor
Philip Ford
John Francis Larkin
Jack A. Marta
Director of Photography
Grace Goddard
Editor
Hugo Riesenfeld
Harry Jones
Sound Engineer
