1970–1971 · 1 season · 7 episodes
Three boys are investigating a ruins of the old fortress during summer vacations.
Edward Dymek
Mandaryn
Henryk Gołębiewski
Manius 'Pikador'
Roman Mosior
Bogus 'Perelka'
Zdzisław Maklakiewicz
Graf
Gustaw Lutkiewicz
Photographer Hubert
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