The crew of a Royal Naval expedition searching for the Arctic's treacherous Northwest Passage discovers instead a monstrous predator.

Four years after the Rising, the government starts to rehabilitate the Undead for reentry into society, including teenager Kieren Walker, who returns to his small Lancashire village to face a hostile reception, as well as his own demons.

Set in the Yorkshire Dales in the 1870s, the series focuses upon the shanty town of Jericho, home to a community that will live, thrive and die in the shadow of the viaduct they've been brought together to build. Jericho is a community of people with secrets to hide and those looking to start again.