Soviet spies are delivering top-secret mail to Moscow.
| Actor | Role |
|---|---|
 Igor StaryginYanis Aurin | Yanis Aurin |
 Natalya VavilovaLena | Lena |
 Leonid NevedomskyMikhail Kurasov | Mikhail Kurasov |
 Ernst RomanovTugarin | Tugarin |
 Mikhail MatveevVasil Ignatevich Pereguda | Vasil Ignatevich Pereguda |
 Yekaterina RomanovaNot listed | Not listed |
| GGeorgy YudinNot listed | Not listed |