A car deliberately runs down a young man on a road by a small border town. The locals recognize the dead man as one of the students who were there on volunteer work some time before. The police detectives, Major Kalas (Rudolf Hrusínský) and Lieutenant Varga (Radoslav Brzobohatý) can then get on the trail of the people with whom the victim was involved, especially at the photographic studio headed by Bohuslav Pacer (Bohus Záhorský).
as major SNB Kalaš
as nadporučík SNB Varga
as vedoucí Fotografie Bohumil Pacer
as Věra Klímová
as příslušník VB Suchánek
as profesor Hechtl alias Horyna
as MUDr. Hanzl
as Ondráš
as předseda senátu
as poručík VB Skála
as učeň zvaný Domovníček
as účetní Fotografie Milnerová
as zástupce vedoucího Fotografie Hadraba
as podpraporčík VB Loubal
as Grossová, Coufalíkova bytná
as František
as fotograf Jan Coufalík
as okrskář v Roudné
as vedoucí obchodního domu
as domovník u Pacera
as Věra Klímová (voice)
as MUDr. Hanzl (voice)
