The whole city is rushing to the circus to see the deadly act of the famous masked artist, the mysterious Mr. X. Among the guests is a rich widow, Countess Palinskaya, for whom any man is ready to perform a feat. But only the mysterious X is able to ignite the flame of love in the heart of the inflexible Countess...
| Actor | Role |
|---|---|
 Natalya BelokhvostikovaCountess | Countess |
| IIgor KeblušekMister X | Mister X |
 Nikolay TrofimovPrince | Prince |
 Yury MorozToni | Toni |
 Yelena ShaninaMarie | Marie |
 Lyudmila KasatkinaToni's Mother | Toni's Mother |
 Vladimir BasovPelikan | Pelikan |
 Aleksandr ShirvindtFiorelli | Fiorelli |
 Emmanuil GellerOrchestra Conductor | Orchestra Conductor |
 Aleksandr PyatkovPrince's Aide-de-Camp | Prince's Aide-de-Camp |
 Lyudmila ShagalovaMother | Mother |
 Vladimir BalonHussar Officer | Hussar Officer |
 Igor TeplovNot listed | Not listed |
| GGennadiy Morozovухажёр графини Палинской | ухажёр графини Палинской |
 Aleksandr FrishNot listed | Not listed |