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