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

Louis Jean Heydt

Paul Essex

Jack Chefe

Audience Member

Heinie Conklin

First Taxicab Driver

Sayre Dearing

Audience Member

Bud Geary

Cop at Station House

Harold Goodwin

Airplane Steward

Edith Hallor

Toots - Stout Woman

Fred Kelsey

Detective - in Cab and at Theatre

Al Kikume

Waiter at Hawaiian Village

Kay Linaker

Egyptian Princess Ectoplasm

Hank Mann

Second Taxicab Driver

Margaret Mann

Airplane Passenger

Frank Meredith

Second Detective

Harold Miller

Audience Member

Bruce Mitchell

Police Desk Sergeant

Hans Moebus

Audience Member

Bert Moorhouse

Audience Member

David Newell

Audience Member

Imboden Parrish

Plane Passenger

Tom Quinn

Man at Landing Gate

Arthur Rankin

Airways Official

Fred Rapport

Audience Member

Gloria Roy

Plane Passenger

Jeffrey Sayre

Man at Landing Gate

Harry Strang

Taxicab Dispatcher

Charles Tannen

Plane Passenger

Edwin Tuttle

Audience Member

John Elliott

Doctor - Backstage