Hipoteza

Jerzy Kozłowski as (uncredited) Jerzy Zelnik as Professor N. Stanisława Celińska as Student / Worker / Patient / Painter

Andrzej Borecki Assistant Production Design Edward Kłosiński Director of Photography Jerzy Buchwald Production Manager Witold Holtz First Assistant Director Anna B. Sheppard Costume Design Teresa Barska Production Design Krzysztof Zanussi Director, Screenplay