The Secret of an Old Attic
During a summer holiday, two boys discover an anti-gravity cannon in an old attic.
- Genre: Family, Adventure, Science Fiction
- Country: Czechoslovakia, Yugoslavia
- Director: Vladimir Tadej
- Cast: Mario Mirković, Jiří Guryča, Nina Petrović, Rene Bitorajac, Špiro Guberina, Boris Dvornik, Petar Jelaska, Jan Kanyza, Miloš Kopecký, Mia Oremović, Edo Peročević, Antun Nalis