Guest Stars Patrick Walshe McBride as Lord Ruthven Anthony Flanagan as Portmann Nathan Stewart-Jarrett as Adisa Clive Russell as Valentin Sacha Dhawan as Dr. Sharma Alec Utgoff as Abramoff Youssef Kerkour as Olgaren Jonathan Aris as Captain Sokolov Lily Dodsworth-Evans as Dorabella Scott Karim as Gupta Samuel Blenkin as Piotr Catherine Schell as Duchess Valeria Andrew Byron as Stepashin Natasha Radski as Mother Lily Kakkar as Yamini