Laura La Plante

Olga 'The Midnight Sun' Morova

Pat O'Malley

Grand Duke Sergius of Russia

Michael Vavitch

Duke's Adjutant

Raymond Keane

Alexei Orloff - Russian Officer

Earl Metcalfe

Nicolai Orloff

George Siegmann

Ivan Kusmin - Banker

Arthur Hoyt

Yessky - Kusmin's Secretary

Medea Radzina

Anisya - Olga's Companion

Nicholas Soussanin

Duke's Aide

Cesare Gravina

Opera Director