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 Louise Coles as Photographer Tomini Babs as Medic 2 James Beaumont as Medic 1 Dana Haqjoo as Farid Namazi Elijah Isaiah Cook as Theo (CIA Officer) Tim Berrington as Tyler Randall Olivia Nita as Mitzka Maggie Daniels as Louisa Sharif Dorani as Parham Hajjar