Kazmierz Dziewanowicz's hobby is very strange. He collects people who were born on the 29th of February. One day he sees that in his collection there are two men with the same name, the same birth place, the same date of birth and the same parents. In the middle of the night somebody kills him. The Intelligence Agency begins investigation.
Joanna Jędryka
as Elżbieta Brylska
Janusz Bylczyński
as Engineer Henryk Nowak
Stanisław Mikulski
as Sergeant Jan Dziewanowicz
Wacław Kowalski
as Greengrocer Henryk Nowak
Bohdan Ejmont
as Major Olecki
Bolesław Płotnicki
as Kazimierz Dziewanowicz
Alina Rostkowska
as Helena Pyrzyk
Zbigniew Józefowicz
as Stefan
Kazimierz Fabisiak
as Wacław Kaczmarek
Stanisław Winczewski
as Major Bolesław Sarnicki
Henryk Modrzewski
as Tomasz
Zdzisław Lubelski
as Kazimierz's Friend
