It is the story of Jack Sawyer who first travelled between America and the Territories to save his mother's life as a twelve-year-old boy. Many years later, as a retired policeman, he returns to face a serial killer.Now, he must undertake a dangerous journey, to stop both a rampaging gang of infected teenagers from America-side and the forces of the mysterious Gullet at the edge of Mid-World before they destroy our world and all worlds.But Jack is older, his band of pilgrims, his ka-tet, is fraying and his task is nearly impossible.