When his housemate dies under mysterious circumstances, Nic Cross inherits a mysterious pyramid-shaped contraption left at the scene, unwittingly summoning a cult of wolf-people who dwell in the dark underbelly of London. As Nic's path crosses with three troubled strangers, they must unite to defeat the Lord of Wolves, before they're transformed into one of his beastly pack.

When the remains of two murdered Princes are discovered at the Tower of London, a troubled Priest must put his beliefs aside to befriend a mysterious prisoner, who has supernatural powers to communicate with the dead. Together they must solve the mystery of who murdered the Princes, as prisoners in the castle dungeon meet their bloody fates at the hands of the Princes' ghosts, who continue to haunt the Castle seeking their revenge.