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).
Rudolf Hrušínský
Radoslav Brzobohatý
Bohuš Záhorský
Helga Čočková
Soběslav Sejk
Zdeněk Hodr
Bohuš Hradil
Pavel Spálený
Vlastimil Fišar
Jan Pohan
Miloš Willig
Ladislav Potměšil
Miroslav Čermák
Jarmila Smejkalová
Václav Lohniský
Ladislav Trojan
Jarmila Švabíková
Vlastimil Čaněk
Miroslav Nohýnek
Otto Šimánek
Vladimír Čech
Vladimír Huber
Josef Mráz
Dagmar Stránská
Oldřich Velen
Jiří Němeček
Karel Černoch
Jan Víšek
Miroslav Český
Zdeněk Braunschläger
Vladimír Foukal
Jiří Želízko
Jiřina Bohdalová
Jaromír Spal