John Gray
Boris Karloff
Joseph
Bela Lugosi
Mary McBride (uncredited)
Mary Gordon
Dan (uncredited)
Milton Kibbee
Survis, Medical Student
Bill Williams
Bobby Burns
Aina Constant
Carl Kent
Ethan Laidlaw
Angus - Horse Trader (uncredited)
Jim Moran
Larry Wheat
Dr. Wolfe 'Toddy' MacFarlane
Henry Daniell
Meg Camden
Edith Atwater
Donald Fettes
Russell Wade
Mrs. Marsh
Rita Corday
Georgina Marsh
Sharyn Moffett
Street Singer
Donna Lee
Townsman (uncredited)
Ted Billings
Richardson a Medical Student (uncredited)
Robert Clarke
Director
Robert Wise
Art Direction
Albert S. D'Agostino
Music Director
C. Bakaleinikoff
Original Music Composer
Roy Webb
Screenplay
Val Lewton
Producer
Costume Design
Renié
Short Story
Robert Louis Stevenson
Philip MacDonald
Executive Producer
Jack J. Gross
Director of Photography
Robert De Grasse
Editor
J.R. Whittredge
Walter E. Keller
Set Decoration
Darrell Silvera
John Sturtevant
Makeup Artist
Mel Berns
Sound Recordist
Bailey Fesler
Assistant Director
Harry Scott
Sound Re-Recording Mixer
Terry Kellum
Camera Operator
Charles Burke