With Abby still missing, and Greg recovering from his injuries, 'the family' are holed up in the city, scavenging for survival, as the series written by Adrian Hodges and starring Julie Graham, Paterson Joseph, Zoe Tapper, Max Beesley and Nikki Amuka-Bird continues. While Naj leaves graffiti messages across the crumbling landscape for Abby, Tom steals supplies from another group of survivors. The family learns that other people have been abducted in the same way as Abby, and that the kidnappers bear the markings of PSJ, a pharmaceutical company with offices in the city. As Tom leads Al, Anya and Sarah off on this trail, Greg and Naj find themselves confronted by the group Tom stole from. Meanwhile, in the lab, Abby is re-infected by Whittaker, who will stop at nothing to find his miracle vaccine... Postponed from Tuesday 19th January.