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...

• Mosfilm
• Natalya Belokhvostikova
• Igor Keblušek
• Nikolay Trofimov
• Yury Moroz
• Elena Shanina
• Lyudmila Kasatkina
• Vladimir Basov
• Aleksandr Shirvindt