A movie novel about academician Kostromin, whose prototype was Ukrainian scientist V. I. Vernadsky (1863-1945).
| Actor | Role |
|---|---|
 Georgi TaratorkinNot listed | Not listed |
 Irina PechernikovaNot listed | Not listed |
 Valentin SmirnitskiyNot listed | Not listed |
 Leonid KayurovNot listed | Not listed |
 Marina LevtovaNot listed | Not listed |
 Pauls ButkevicsNot listed | Not listed |
 Valentin GolubenkoNot listed | Not listed |
 Anastasiya IvankovaNot listed | Not listed |
| IIgor Kosukhinmuzhik-smutyan | muzhik-smutyan |