Sidney Toler
Charlie Chan
Victor Sen Yung
Jimmy Chan
Cesar Romero
Fred Rhadini
Douglas Fowley
Peter Lewis
Pauline Moore
Eve Cairo
Donald MacBride
Deputy Police Chief J.J. Kilvaine
Douglass Dumbrille
Stewart Salsbury, alias Thomas Gregory
Trevor Bardette
Dr. Zodiac's Servant
Gerald Mohr
Dr. Zodiac (in disguise)
Wally Vernon
Elmer
June Gale
Myra Rhadini
Billie Seward
Mrs. Bessie Sibley
Sally Blane
Stella Essex
Charles Halton
Uncle Redley
