Boris Karloff as John Gray

Bela Lugosi as Joseph

Henry Daniell as Dr. Wolfe 'Toddy' MacFarlane

Edith Atwater as Meg Camden

Russell Wade as Donald Fettes

Rita Corday as Mrs. Marsh

Sharyn Moffett as Georgina Marsh

Donna Lee as Street Singer

Ted Billings as Townsman (uncredited)

Robert Clarke as Richardson a Medical Student (uncredited)

Mary Gordon as Mary McBride (uncredited)

Milton Kibbee as Dan (uncredited)

Bill Williams as Survis, Medical Student

Bobby Burns as

Aina Constant as

Carl Kent as

Ethan Laidlaw as

Jim Moran as Angus - Horse Trader (uncredited)

Larry Wheat as