"A woman wakes up in the middle of the night on board a train, but she can't remember how she got there. Danger and suspense ensue."
Claudette Colbert
as Alison Courtland
Robert Cummings
as Bruce Elcott
Don Ameche
as Richard W. Courtland
Rita Johnson
as Barby
George Coulouris
as Charles Vernay
Queenie Smith
as Grace Vernay
Ralph Morgan
as Dr. Rhinehart
Keye Luke
as Jimmie Lin
Fred Nurney
as Haskins
Raymond Burr
as Detective Sergeant Strake
Marya Marco
as Jeannie Lin
Lillian Bronson
as Helen
Hazel Brooks
as Daphne
Bess Flowers
as Miss Miller
Lillian Randolph
as Parkhurst's Maid
James Flavin
as Lieutenant Mitchell
Jimmie Dodd
as Elevator Operator
Robert Dudley
as Bar Patron at The Maples
Murray Alper
Syd Saylor
as Milkman
Joseph A. Valentine
Director of Photography
St. Clair McKelway
Screenplay
Charles 'Buddy' Rogers
Producer
Douglas Sirk
Director
Leo Rosten
Novel
Ralph Cohn
Lynn Harrison
Editor
Rudy Schrager
Original Music Composer
Howard Bristol
Set Decoration
Clarence Eurist
Assistant Director
William Ferrari
Art Direction
Robert M. Beche
Production Manager
Mary Pickford
Harold Greene
Associate Producer