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
Janusz Bylczyński
Stanisław Mikulski
Wacław Kowalski
Bohdan Ejmont
Bolesław Płotnicki
Alina Rostkowska
Zbigniew Józefowicz
Kazimierz Fabisiak
Stanisław Winczewski
Henryk Modrzewski
Zdzisław Lubelski
Adam Mularczyk
Tomasz Zaliwski
Ryszard Pietruski
Barbara Wrzesińska
Bogumił Antczak
Tadeusz Chmielewski
Michał Gazda
Teodor Gendera
Juliusz Kalinowski
Jerzy Karaszkiewicz
Janusz Koryzma
Wiesław Kowalczyk
Krzysztof Kowalewski
Ludosław Kozłowski
Karol Leszczyński
Józef Para
Ryszard Pracz
Sylwester Przedwojewski
Bogdan Śmigielski
Zdzisław Socha
Henryk Teichert
Joanna Walter