Young boy traveling on the ship called "Equator" suddenly witnesses the activity of the spy and helps to catch him.
| Actor | Role |
|---|---|
 Jüri KrjukovIlmar | Ilmar |
 Mikhail VolkovNot listed | Not listed |
 Vladimir KenigsonNot listed | Not listed |
 Arina AleynikovaNot listed | Not listed |
 Yuri ChekulayevNot listed | Not listed |
 Nikolay GorlovNot listed | Not listed |
 Aleksandr MartynovNot listed | Not listed |
 Leonid DovlatovNot listed | Not listed |
 Leonid OkunyovNot listed | Not listed |
 Igor PushakovNot listed | Not listed |
 Tamara YarenkoNot listed | Not listed |
 Vyacheslav TsyupaNot listed | Not listed |
| LLyudmila AlpatovaNot listed | Not listed |