Guest Stars Ross McCall as Ron Clark Michelle Fairley as Margot Al-Harazi Emily Berrington as Simone Al-Harazi Liam Garrigan as Ian Al-Harazi Adam Sinclair as Gavin Leonard Alex Lanipekun as James Harman Co Starring Julian Kostov as Agent Harwell Rhashan Stone as CIA Doctor Martin McDougall as Lead Agent Hywel Simons as Agent Williams