Young KGB agents investigate a complex murder case with several suspects.
| Actor | Role |
|---|---|
 Yuri GusevBaturin | Baturin |
 Nikolai TimofeyevVasilchenko | Vasilchenko |
 Nikolai GritsenkoTerekhov | Terekhov |
| AAleksey YakovlevKrasnyukov | Krasnyukov |
 Petr ShelokhonovVladimir Semenovich Sotnikov | Vladimir Semenovich Sotnikov |
 Gennady NekrasovTokarev | Tokarev |
| TTatiana MayorovaTanya | Tanya |
 Ignat LeyrerDanilin | Danilin |
| GGalina ShmakovaIrina - Sotnikov's stepdaughter | Irina - Sotnikov's stepdaughter |
| VValeri SmolyakovValeri | Valeri |
 Oleg BelovLieutenant | Lieutenant |
 Oleg DashkevichKGB officer | KGB officer |
 Yuri DedovichNot listed | Not listed |
 German OrlovKGB officer | KGB officer |
| LLyubov TishchenkoPolina Vasilevna | Polina Vasilevna |
| KKonstantin SmirnovMalyshev | Malyshev |
 Nikolay KharitonovNot listed | Not listed |
 Yuri PerovBorder guard | Border guard |
 Boris KrasilnikovNot listed | Not listed |