Several scientists create drama around a mysterious black ball.
Nikolai Karachentsov
Boris Nikiforov
Vladimir Shurupov
Yevgeni Gerasimov
Yevgeni Kindinov
Igor Kvasha
Igor Gelashvili
Producer
Aleksandr Zhurbin
Music
Aleksey Solovyov
Director
Arkadiy Strugatskiy
Writer
M. Zotova
Art Direction
Ernst Gaman
Director of Photography
Nelli Kudrina
Sound
Fazil Gasanov
Animation
Mikhail Pershin
