Sidney Toler
饰 Charlie Chan
Victor Sen Yung
饰 Jimmy Chan
Pauline Moore
饰 Eve Cairo
Donald MacBride
饰 Deputy Police Chief J.J. Kilvaine
Douglass Dumbrille
饰 Stewart Salsbury, alias Thomas Gregory
Trevor Bardette
饰 Dr. Zodiac's Servant
Gerald Mohr
饰 Dr. Zodiac (in disguise)
Billie Seward
饰 Mrs. Bessie Sibley
Sally Blane
饰 Stella Essex
Louis Jean Heydt
饰 Paul Essex
Jack Chefe
饰 Audience Member
Heinie Conklin
饰 First Taxicab Driver
Sayre Dearing
饰 Audience Member
Bud Geary
饰 Cop at Station House
Harold Goodwin
饰 Airplane Steward
