Reparto (por orden de créditos)
Henry Oscar
Frederick the Great
Alan Judd
Prince August
Sally Rogers
Princess Ulrica
Mary Jones
Princess Amelia
Netta Westcott
Baroness Blaspiel
Irmgard Spoliansky
Marie von Forster
Milton Rosmer
Baron de Rudenschold
Graeme Muir
Baron von der Trenck
Noel Dainton
An Officer of the King's Bodyguard
Brian Oulton
Comet Eugen von Horst
Anthony Drake
Count Otto Stumm
Richard Shayne
Eichel
Oliver Johnston
Count von Podewils
James Raglan
Field-Marshal Schwerin
Sidney Monckton
Chamberlain at Mont Bijou
Alan Dalton
Soldier
John Cronin
James Gilbert