Geoffrey Toone

as Dr. Richard Hilliard

as Marquis de St. Cyr

as Cmdr. Clive Stanton

as Dr. Baird

as Captain Hood

as Temmosus

as Johnny Carson

as Von Ribbentrop

as Hepesh

as Duke of Savoy

as Harold Hubbard

as Swedish Embassy Official

as Colonel G.H. Hore-Davis

as Hepesh

as The General

as Basil Farnham

as Jim Low

as Major General Ransom

as Lord Ridgemere

as Bittlesham