Hipoteza

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

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