Geoffrey Toone

as Sir Edward Ramsay

as Marquis de St. Cyr

as Temmosus

as Major Pitcairn

as Duke of Savoy

as Dr. Baird

as Harold Hubbard

as Captain Jackson Sale

as Martin Mallison

as David

as Dr. Richard Hilliard

as Von Ribbentrop

as Colonel Justin

as Captain Hood

as Count Cambia

as Mr. Tobin

as Jack Bannerman

as Swedish Embassy Official

as Cmdr. Clive Stanton

as Hepesh

as Sexton Blake

as Bill Brown

as Lt. Stocken

as Peter Templeton

as Roche

as King Arthur

as Johnny Carson

as Commentator