Richard Haydn

Bookworm (voice) (uncredited)

Herr Falkstein

Andrew Kidder

Quentin Bartlett

Whitey

Rupert Rowbotham

Max Detweiler

Mr. Hemingway

Julian Clarington

William Brown

Sir Henry Vining

Edwin Carp

Prologue Narrator (uncredited)

Prof. Summerlee

Alfred North

Bartlett Finchley

The Accountant

Oliver Wiggins

Prime Minister

Muche

Stephen Spettigue

John Fusenot

Horatio

Dr. Avord Barrett

Bertie Searles

Christopher Wellington St. John Denny

Chancellor

Baron Popoff

Caterpillar (voice)

Jerome Thisbee

l'empereur François-Joseph

Self

Mr. Clarence Appleton

Earl of Radcliffe

Andre LeBlanc

Deputy Commissioner Hewitt

Horatio Willing

Dr. Chisholm

Jason Reid

Jonathan Wilson

Limo

Thomas Rogers

Specialty

The Victim (voice) (uncredited)

Roger Winant

Mr. Fulcher

George Lockwood

Chuck

Prof. Oddly

Charley Wyckham