| Actor | Role |
|---|---|
 Laura La PlanteOlga 'The Midnight Sun' Morova | Olga 'The Midnight Sun' Morova |
 Pat O'MalleyGrand Duke Sergius of Russia | Grand Duke Sergius of Russia |
 Michael VavitchDuke's Adjutant | Duke's Adjutant |
 Raymond KeaneAlexei Orloff - Russian Officer | Alexei Orloff - Russian Officer |
 Earl MetcalfeNicolai Orloff | Nicolai Orloff |
 George SiegmannIvan Kusmin - Banker | Ivan Kusmin - Banker |
 Arthur HoytYessky - Kusmin's Secretary | Yessky - Kusmin's Secretary |
| MMedea RadzinaAnisya - Olga's Companion | Anisya - Olga's Companion |
| NNicholas SoussaninDuke's Aide | Duke's Aide |
 Cesare GravinaOpera Director | Opera Director |
 Nina RomanoBarbara | Barbara |
 Albert PriscoMessenger | Messenger |
 George B. WilliamsRuined Banker | Ruined Banker |
 Yola d'AvrilNot listed | Not listed |
 Max BarwynMaitre D' | Maitre D' |
 Sayre DearingYoung Russian Officer | Young Russian Officer |
 Louis MercierRussian Dissident | Russian Dissident |
 Phillips SmalleyCard Player | Card Player |
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