Inspector Forsythe
Sir Digby Montague
Paul's Father
Hedges
John Hobhouse
Mr. Trout
Sir Charles Leigh
Sir Frederick Bland
Frank Mainwaring KC
Bill Wainwright
Edgar
Lord Willie Panniford
Owen Morgan-Vaughan
Cyprus, the conductor
Porpino
Gus Loman
Paul Faber
Lucius Septimus
Mr. Jackson
Robert Duclos
Von Alven
The Prince of Wales
Hausemann / Lord Buckley
George the Third
Prof. Winkler
Schmidt
Lieutenant Kuhnecke
Cartwright
Van Dyne
Northern Salvage Company Manager
Harris
Ship's Officer (uncredited)
German Secret Service Chief
Court Chamberlain
Carter
Captain Torres
Delaney
Defense
Saville
