Guest Stars Seth Gabel as Michele Besso Alicia von Rittberg as Anna Winteler Sally Dexter as Older Mileva Henry Goodman as Walther Rathenau Lily Dodsworth-Evans as Ilse Einstein Gwendolyn Ellis as Young Elsa Einstein Zoe Telford as Clara Haber Dag Malmberg as Svante Arrhenius Joshua Akehurst as Hans Albert Einstein (Age 15) Silvina Buchbauer as Katharina Lenard Lochlainn O'Mearáin as Georg Nikolai Adrian Edmondson as David Hilbert Jack Fox as Dr. Paul Weyland Co Starring Edan Hayhurst as Hans Albert Einstein (Age 10) Caspar Griffiths as Eduard Einstein (Age 4) Marc Cram as Executive William Valerián as Prussian Academy Assistant Logan Hillier as Reporter 1 Daniel Brown as British Photographer Paul Gilmore as General Lehning Václav Jiřaček as German Photographer Steve Windolf as Carl Bosch Edward Harrison as Arthur Eddington Joe Weintraub as Reporter 2 Tim Woodward as Magistrate Konig Jiri Roskot as Dying French Soldier Eric Carte as Sir William Crookes Hugh Robb as Eduard Einstein (Age 9) Zuzana Stivínová as General's Wife Lukás Král as Scientist Johannes Rhomberg as Swiss Soldier Samuel Hummel as German Soldier