Guest Stars Pearl Mackie as Alysse Jess Chanliau as Ronnie Buckhurst Tim Delap as Byron Kenichiro Thomson as Martin Penny Downie as Frances Munning Freddie Stabb as Lucinda Maggie Daniels as Louisa Olivia Nita as Mitzka Elijah Isaiah Cook as Theo (CIA Officer) Louise Coles as Photographer Dana Haqjoo as Farid Namazi Tomini Babs as Medic 2 James Beaumont as Medic 1 Tim Berrington as Tyler Randall Sharif Dorani as Parham Hajjar