Guest Stars Áine Rose Daly as Sandy Phillips Cherrelle Skeete as Terri Miller Joel Kinnaman as Erik Heller Gianna Kiehl as Jules Allen Chloe Pirrie as Brianna Stapleton Taylor Napier as Chuck Joanna Kulig as Johanna Petrescu Sam Swainsbury as Ethan Williams Adam Bessa as Abbas Naziri Gabriel Akuwudike as Max Kaplan David Avery as Stephen Mannion Trent Garrett as Taylor Mark Bazeley as Robert Gelder Caitlin Innes Edwards as Grant Flora Nicholson as Kenton Léann Hamon as Nadiya Wiebke Frost as Lena Behr Michelle Duncan as False Marissa Russ Bain as CIA Officer Sanchez Guy Roberts as Brody Klara Cibulova as Zofia Gary Stennette as Utrax Man Klára Lőw as Military Doctor Dániel Tóth as CIA Monitor Leander Vyvey as Male Nurse Victor Dohlsten as Ryder Jenn Kirk as Pioneer Doctor Claudia Graf as Orderly Stephanie Brush as Vienna Local