Guest Stars Iain Glen as Dr. Pete Nichols Caitlin Zoz as Kathleen Billings Olatunji Ayofe as Teddy Chipo Chung as Sandy Christian Ochoa as Rick Amundsen Sara Hazemi as Eater Orlando Norman as Rick Georgina Sadler as Audrey Lolita Chakrabarti as Lukas's Mother Jessica Henwick as Helen Ashley Zukerman as Donald Keene Co Starring Akie Kotabe as Diego Angela Yeoh as Deputy Molly Karins Khairika Sinani as Raider Jean Oscar Coleman as Anthony Sims Nick Haverson as Russell Conroy Liam Akpan as Deputy Jerry Greg Hemphill as Head Guard Randy Cameron Bell as Young Jimmy Reggie Absolom as Benny Ricky Shah as Rebel Guard #1 Harriet Barrow as Up-Top Woman Lia Goresh as Raider Jo Florian Clare as Judicial Tech Chris Stephen Leask as Judicial Rep Dana Stephen Aaron-Sipple as Supervising Raider Dan Imogen Butler-Cole as Gwen Conroy Michael Younis as Rebel Guard #2 Max Mindell as Rebel Mechanic Kevin