Guest Stars Gina McKee as Caterina Sforza Thure Lindhardt as Rufio Sebastian De Souza as Alfonso of Aragon Pilou Asbæk as Paolo Orsini Abraham Belaga as Vitelezzo Vitelli Prometheus Aleifer as Roberto Orsini Joseph Macnab as Prospero Colonna Brendan Cowell as Mattai the Hebrew Björn Hlynur Haraldsson as Gian Paolo Baglioni Charlie Carrick as Pascal Linda Marlowe as Old Lady Luke Allen-Gale as Fredirigo Tom Keller as Gamaliel Liam McMahon as General Edit Balázsovits as Nurse Tom Stuart as Sulphur Mine Overseer Kata Sarbó as Nurse 2 Bálint Adorjáni as Guard 1 Eric MacLennan as Gatekeeper Declan Hannigan as Servant Ferenc Hujber as Guard 2
