After discovering a dark window which appears on the wall every midnight two boys decide to investigate the mystery of a dark room behind the window.
| Actor | Role |
|---|---|
 Ivan AgapovNot listed | Not listed |
 Konstantin KryukovNot listed | Not listed |
 Sergey NikonenkoNot listed | Not listed |
 Galina PolskikhNot listed | Not listed |
 Irina SkobtsevaNot listed | Not listed |
 Viktor SukhorukovNot listed | Not listed |
| NNikolay Bushanskymerchant | merchant |
 Nina MaslovaNot listed | Not listed |
 Egor GubarevNot listed | Not listed |
| AAndrey PopovichNot listed | Not listed |
 Evgeniya KaverauNot listed | Not listed |
 Daniil MerkulovNot listed | Not listed |
 Valentina LyapinaNot listed | Not listed |
| LLeonid AnisimovNot listed | Not listed |
 Oleh KarpenkoNot listed | Not listed |
| SSvetlana LevichevaNot listed | Not listed |
 Irina SavinaNot listed | Not listed |
| NNikolay BushanskyNot listed | Not listed |
 Ekaterina VoroninaNot listed | Not listed |