Boris Karloff
John Gray
Bela Lugosi
Joseph
Henry Daniell
Dr. Wolfe 'Toddy' MacFarlane
Edith Atwater
Meg Camden
Russell Wade
Donald Fettes
Rita Corday
Mrs. Marsh
Sharyn Moffett
Georgina Marsh
Ted Billings
Townsman (uncredited)
Robert Clarke
Richardson a Medical Student (uncredited)
Mary Gordon
Mary McBride (uncredited)
Milton Kibbee
Dan (uncredited)
Bill Williams
Survis, Medical Student
Bobby Burns
Carl Kent
Ethan Laidlaw
Larry Wheat
Donna Lee
Street Singer
Aina Constant
Jim Moran
Angus - Horse Trader (uncredited)
