Francis Lederer as Sandro (Prince Alessandro), Benita Hume as Miss Cordelia Channing, Alan Mowbray as Lord Clewe, Adele St. Mauer as Lucille (as Adele St. Maur), Lennox Pawle as Consul-General Semanek, Akim Tamiroff as Spellek, Frances Dee as Mirabel Miller, Luis Alberni as Ernest, Lionel Stander as Gettel, Ferdinand Gottschalk as Mr. Squires