Guest Stars Cache Vanderpuye as Alfie Ademura Olivia-Mai Barrett as Ryder Ruby Siddle as Penny Cuttermill Co Starring Zak Rowlands as Bradford Craig Jackson as Hanley Nqobile Khumalo as Chrissy Tumisho Masha as Sergeant Carson Allen Skye Russell as Rachel Biance Venter as Lucy Julian Place as Corporal Lee Davis Duane Behrens as Science Officer Tristan Robertson as Guard #1, Camp Pierce Alex Sono as Guard #2, Camp Pierce Trevor Byrom as US Soldier 1 Phumi Mthembu as Marlene