"Clarinetist Stan has a nightmare about killing a man in a mirrored room. But when he wakes up and finds blood marks on himself and a key from the dream, he suspects that it may have truly happened."
Edward G. Robinson
as Rene Bressard
Kevin McCarthy
as Stan Grayson
Connie Russell
as Gina
Virginia Christine
as Sue Bressard
Rhys Williams
as Deputy Torrence
Gage Clarke
as Belknap / Harry Britten
Marian Carr
as Madge Novick
Barry Atwater
as Captain Warner
Meade 'Lux' Lewis
as Meade
Ralph Brooks
as Oscar (Uncredited)
Jack Chefe
as Nightclub Waiter (Uncredited)
Sol Gorss
as Bob Clune (Uncredited)
John Mitchum
as Onlooker at Stan's Suicide Attempt (Uncredited)
Cosmo Sardo
as Nightclub Patron (Uncredited)
Maxwell Shane
Director
William H. Pine
Producer
Herschel Burke Gilbert
Original Music Composer
Joseph F. Biroc
Director of Photography
George A. Gittens
Editor
Cornell Woolrich
Novel
William C. Thomas
Norman Pringle
Makeup Artist
Fay Moore
Costume Design
Hazel W. Hall
Script Supervisor
Robert H. Justman
Assistant Director
Myrl Stoltz
Hairstylist
Roger Heman Sr.
Sound Recordist
Paul Wolfe
Music Director
Screenplay
Frank Paul Sylos
Art Direction
Howard A. Anderson
Visual Effects
Al Murphy
Second Assistant Director
Jack Solomon
Edward G. Boyle
Set Decoration
Frank Beetson Jr.
Billy May
Music Arranger