| Credited cast: | |||
| Anya Taylor-Joy | ... | Irene | |
| Rosamund Pike | ... | Marie Curie | |
| Aneurin Barnard | ... | Paul Langevin | |
| Jonathan Aris | ... | Hetreed | |
| Sam Riley | ... | Pierre Curie | |
| Simon Russell Beale | ... | Professor Lippmann | |
| Corey Johnson | ... | Adam Warner | |
| Indica Watson | ... | Irene (age 6) | |
| Tim Woodward | ... | Alexandre Millerand | |
| Harriet Turnbull | ... | Young Marie | |
| Demetri Goritsas | ... | Dr. Jenkins | |
| Mirjam Novak | ... | Nurse Francoise | |
| Peter Sztojanov Jr. | ... | Engineer | |
| Cara Bossom | ... | Eve Curie | |
|
|
Franciska Töröcsik | ... | Woman |
A story of the scientific and romantic passions of Marie Sklodowska-Curie (Polish scientist) and Pierre Curie, and the reverberation of their discoveries throughout the 20th century.