Episode 1

Professor Charlie Stoddart, a scientist at the Fortitude research centre, is approached by a man named Jason Donnelly, who claims to have found the carcass of an extinct mammoth. When Jason offers to sell Charlie the carcass, he refuses and threatens to report Donnelly to the police for the illegal sale of a scientific discovery. Meanwhile, a young boy, Liam Sutter, faints after taking a walk with his friend, Carrie Morgan. When he later awakens, he discovers he is alone. His father, Frank, who is supposed to be looking after him, is nowhere to be seen. Liam opens up his bedroom window, and climbs out into the snow, bare-foot, to search for him. When he contracts frostbite, he is rushed to hospital. Meanwhile, scientist Vincent Rattrey arrives at Stoddart's house for a pre-planned meeting and finds him dead, having been the victim of a savage attack.