John Howard

Captain Hugh C. Drummond

Heather Angel

Phyllis Clavering

H.B. Warner

Colonel Nielsen

Reginald Denny

Algy Longworth

E. E. Clive

Tenny

Jean Fenwick

Lady Beryl Ledyard

Zeffie Tilbury

Aunt Meg

George Zucco

Rolf Alferson

Leonard Mudie

Richard Gannett

Evan Thomas

Smith

Clyde Cook

Constable Sacker

David Clyde

Constable McThane

George Regas

Soongh

Neil Fitzgerald

Sir Malcolm McLeonard

Claud Allister

Sir Basil Leghorne

Ferdinand Munier

Old Major Trumleigh

John Sutton

Inspector Tredennis

John Davidson

Gumba, Bird Seller

John Rogers

Guggins, Scrawny Henchman

Jimmy Aubrey

Steward

Frank Baker

Cop

Billy Bevan

Aquarium Guard

Forrester Harvey

Constable at Gannett House

Eugene Jackson

Hotel Page Boy

Ruth Rogers

Maid

Harold Garrison

Native Boy with Message

Frank Lackteen

Native Selling Rifle

Steve Clemente

Native Buying Rifle

Kathryn Bates

Tourist

Neil Craig

Tourist

Grace Hayle

Tourist

Gerald Rogers

Island Police Desk Sergeant

Olaf Hytten

Island Police Arresting Sergeant

Sam Savitsky

Foreign Agent

Hercules Mendez

Foreign Agent

James P. Hogan

Director

Stuart Palmer

Screenplay

Ted Tetzlaff

Director of Photography

Stuart Gilmore

Editor

Franz Bachelin

Art Direction

Richard Olson

Sound Recordist

Gerard Carbonara

Original Music Composer

Herman C. McNeile

Novel

Boris Morros

Music Director

William LeBaron

Executive Producer

Stuart Walker

Producer

Hans Dreier

Art Direction

A. E. Freudeman

Set Decoration

Hugo Grenzbach

Sound Recordist

Harry Scott

Assistant Director