![A Mystery Known to All](https://image.tmdb.org/t/p/w342/80jYjDdOEn4MM6XshTvVdvmz6G0.jpg)
A Mystery Known to All
Children from in a summer camp decided to invite a group of famous actors to visit them.
- Year: 1981
- Country: Soviet Union
- Genre: Music, Family, Comedy
- Studio: Dovzhenko Film Studios
- Keyword: musical
- Director: Mykola Zasieiev-Rudenko
- Cast: Yulya Zhivotvorova, Yuri Prokhoda, Nadezhda Rumyantseva, Nikolay Grinko, Zinovi Vysokovsky, Valeriy Nosik