A young lab technician, threatened by a blackmailer, descends into madness.
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Gabriela Kownacka
Mieczysław Voit
Teresa Szmigielówna
Henryk Bąk
Wirgiliusz Gryń
Marek Lewandowski
Barbara Wałkówna
Agata Rzeszewska
Jerzy Cnota
Eugeniusz Korczarowski
Zofia Kopacz
(uncredited)
