A film biography of Maria Skłodowska-Curie and Pierre Curie.
| Actor | Role |
|---|---|
 Zofia MrozowskaEwa Curie | Ewa Curie |
 Anna CiepielewskaMaria Skłodowska-Curie | Maria Skłodowska-Curie |
 Piotr PawłowskiPierre Curie | Pierre Curie |
 Władysław HańczaPaweł Appel | Paweł Appel |
 Elżbieta GaertnerNurse | Nurse |
| DDanuta GallertLab Worker | Lab Worker |
 Renata KossobudzkaAmerican Journalist | American Journalist |
 Zofia MałyniczTeacher | Teacher |
 Wiesława NiemyskaBronisława | Bronisława |
 Irena OberskaWoman taking Maria's Reference Letter | Woman taking Maria's Reference Letter |
 Hanna StankównaNurse | Nurse |
 Stanisław JaśkiewiczSchool Headmaster | School Headmaster |
 Maciej MaciejewskiDoctor | Doctor |
 Lech MadalińskiPierre's Father | Pierre's Father |
 Janusz ZakrzeńskiWarsaw Science Society Member | Warsaw Science Society Member |