Hipoteza

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

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