Générique complet
La treizième lettre
Linda Darnell
Denise Turner
Charles Boyer
Dr. Paul Laurent
Michael Rennie
Dr. Pearson
Constance Smith
Cora Laurent
Françoise Rosay
Mrs. Gauthier
Judith Evelyn
Sister Marie Corbin
Guy Sorel
Robert Helier
June Hedin
Rochelle Turner
George Alexander
Dr. Fletcher (uncredited)
Jacques Auger
Priest (uncredited)
Lucie Boitres
Townswoman (uncredited)
C. Bosvier
Townsman (uncredited)
Sheila M. Coonan
Townswoman (uncredited)
Wilford Davidson
Townsman (uncredited)
Camille Ducharme
Fredette (uncredited)
J. Léo Gagnon
Dr. Helier (uncredited)
Blanche Gauthier
Townswoman (uncredited)
Arthur Groulx
Townsman (uncredited)
Paul Guèvremont
Postman (uncredited)
L.P. Herbert
Townsman (uncredited)
Robin Hughes
Intern (uncredited)
Odie Lemire
Townswoman (uncredited)
Ovila Légaré
Mayor (uncredited)
Stanley Mann
Officer (uncredited)
Patrick O'Moore
Intern (uncredited)
Gilles Pelletier
Townsman (uncredited)
Réalisation
Scénario
Production
Image
Montage
Son et musique
Alex North
Musique
Arthur von Kirbach
Sound
Maurice De Packh
Orchestrator
Roger Heman Sr.
Sound
Lionel Newman
Music Director
Décors
Walter M. Scott
Décoration
Lyle R. Wheeler
Direction artistique
Thomas Little
Décoration
Maurice Ransford
Direction artistique