The border must be guarded against insidious intruders, of that the brave border guard has no doubt. He takes in a shot dog, gains its trust, and eventually, thanks to it, catches an enemy agent who wanted to disrupt the peaceful life of our progressive people.
| Actor | Role |
|---|---|
 Eduard CupákNot listed | Not listed |
 Zdeněk DítěNot listed | Not listed |
 Karol L. ZacharNot listed | Not listed |
 Josef BekNot listed | Not listed |
 Miloš NedbalNot listed | Not listed |
 Eliška KuchařováNot listed | Not listed |
 Ilja RacekNot listed | Not listed |
 Anton MrvečkaNot listed | Not listed |
 Vladimír HrubýNot listed | Not listed |
| VVladimír StachNot listed | Not listed |
 Libuše PospíšilováNot listed | Not listed |
 Ota SklenčkaNot listed | Not listed |
 Vladimír BrabecNot listed | Not listed |
| LLadislav GzelaNot listed | Not listed |
| RRudolf KřivánekNot listed | Not listed |
| KKarel ŠebestaNot listed | Not listed |
 Miroslav HomolaNot listed | Not listed |
 Petr HaničinecNot listed | Not listed |
| JJitka KasalickáNot listed | Not listed |
| VVlasta KasalickáNot listed | Not listed |
| FFrantišek Miroslav DoubravaNot listed | Not listed |