Greg has been wounded by a gunshot, Anya, Al and Tom frantically search a nearby hospital to find vital medical supplies. With the building on fire, it suddenly collapses, leaving Anya and All trapped. Whilst Greg is now perilously close to death. Abby still remains kidnapped at the Lab as the Scientists seek to find a vaccine using her immune system.
Elenco: Max Beesley , Zoe Tapper , Paterson Joseph , Phillip Rhys , Julie Graham , Robyn Addison , Nicholas Gleaves , Nikki Amuka-Bird , Chahak Patel , Freema Agyeman , Shaun Dingwall .