Guest Stars Barry Sloane as DS Jim Dawson Daniel Ryan as DAC Peter Clarke Mark Ivanir as Alexander Goldfarb Temirlan Blaev as Young Anatoly Litvinenko Kayla Meikle as DC Deborah Maxwell Richard Pepper as DCI Duncan Ball Kirsten Foster as Jenny Hyatt Sam Troughton as DI Brian Tarpey Estella Daniels as Dr Onome George Marcus Onilude as Aidan Aleksandar Mikic as Dmitry Kovtun Rad Kaim as Andrey Lugovoy Nikolai Tsankov as Boris Berezovsky Edward Baker-Duly as Martin Svennson Zoe Telford as Ingrid Campbell Joanna Kanska as Nika Privalova Sam Marks as DC Oliver Gadney Simon Haines as Dr. Benjamin Swift Daniel Paton as Russian Driver Mitya Savelau as Hotel Concierge
