Philippe Volter
(Ignaz Philippe Semmelweis)
Marc de Jonge
(Professor Klein)
Fanny Bastien
(Katia)
Maria Pakulnis
(Baroness Olga von Melck)
Henryk Bista
(Professor Skoda)
Henryk Talar
(Albert Lothar)
Piotr Gąsowski
(Markusovsky)
Piotr Polk
(Gruber)
Krzysztof Kumor
(Doctor Bartch)
Małgorzata Pieczyńska
(Countess)
Hanna Polk
(Rosa)
Paweł Nowisz
(Hospital Porter)
Paweł Burczyk
(Muller)
Ewa Telega
(Sister Maria Teresa)
Małgorzata Rożniatowska
(Sister Teresa)
Leon Niemczyk
(Committee Chairman)
Wojciech Klata
(Young Man)
Wojciech Kowman
(Klein's Student)
Piotr Szwedes
(Klein's Student)
Marcin Klepacki
(Braun)
Piotr Bajor
(Committee Member (uncredited))
Marek Cichucki
(Klein's Student (uncredited))
Grzegorz Emanuel
(Walter (uncredited))
Marek Frąckowiak
(Lecturer at the Autopsy (uncredited))
Krzysztof Kiersznowski
(Doctor (uncredited))
Marek Marcinkowski
(Committee Member (uncredited))
Mirosława Niemczyk
(Rosa's Friend (uncredited))
Anna Teresa Nowak
(Patient (uncredited))
Andrzej Precigs
(Committee Member (uncredited))
Jerzy Próchnicki
(Committee Member (uncredited))
Jacek Różański
(Committee Member (uncredited))
Wojciech Siemion
(Committee Member (uncredited))
Piotr Wawer Sr.
(Committee Member (uncredited))