Hipoteza

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

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