Two friends think that they've discovered a dangerous spy hiding in a mine shaft.
Wadim BerestowskiDirector
Karlik Rudniok
Franek Miksa
Stefan Gola
Kryza
Miksa (Franek's father)
Miksina (Franek's mother)
Sądej
Rudniok (Karlik's father)
Bolesławiec
Headmaster Zajączkowski
Kropa
Sztelmach
Kupść
Stachurka
Miner (uncredited)
Man with a Flag (uncredited)
School Inspector (uncredited)
Woman in an Office (uncredited)
