| Name | Character | Episodes |
|---|---|---|
| Artur Smolyaninov | Aleksey Korenev - sotrudnik NII | 2 |
| Albert Filozov | Arkhipov - professor | 2 |
| Svetlana Timofeeva-Letunovskaya | Inna Denisenko - zhena Mishi | 2 |
| Nikolai Merzlikin | Nachalnik Dronova - v generalnoy prokurature | 2 |
| Vsevolod Shilovsky | Boris Ratushinskiy | 2 |