A young zoologist interrupts his scientific expedition after learning about the sudden death of his father, a major trade figure. From the notes left behind by his father, the young man discovers with horror that he could not bear the betrayal revealed to him by his closest friend and ally, who also turned out to be his wife’s lover.
| Actor | Role |
|---|---|
 Alexandr SmirnovAlexey Shaposhnikov | Alexey Shaposhnikov |
 Yekaterina VasilyevaTamara Ivanovna — mat' Alekseya | Tamara Ivanovna — mat' Alekseya |
 Kirill LavrovSukhobokov (dyadya Zhora) - sosluzhivets ottsa Alekseya | Sukhobokov (dyadya Zhora) - sosluzhivets ottsa Alekseya |
 Vera GlagolevaZina | Zina |
 Marina Yurasovavrach-patologoanatom | vrach-patologoanatom |
 Yuri GorobetsFedorenko (dyadya Yura) - sosluzhivets ottsa Alekseya | Fedorenko (dyadya Yura) - sosluzhivets ottsa Alekseya |
 Lyudmila ArininaKatya (totya Mukha) | Katya (totya Mukha) |
 Aleksei MironovPavel Maksimovich | Pavel Maksimovich |
 Vladimir EryominTolik - sotrudnik yuridicheskoy konsul'tatsii | Tolik - sotrudnik yuridicheskoy konsul'tatsii |
| AAlexander KorolVasya - gost' Tolika | Vasya - gost' Tolika |
 Aleksandr Pashutinochkastyy | ochkastyy |
 Aleksandr Susninsosed | sosed |