Based on the story of the same name by D. Granin, which tells about scientists and moral choice.
| Actor | Role |
|---|---|
 Rodion NahapetovDenis Semyonovich Drobyshev | Denis Semyonovich Drobyshev |
 Georgi BurkovKonstantin Konstantinovich Selyanin | Konstantin Konstantinovich Selyanin |
 Vera GlagolevaKlavdiya | Klavdiya |
 Daniil Graninfrom the author | from the author |