Roland's ka-tet pushes deeper into Mid-World, a landscape where the laws of physics and time have come undone. Roland is haunted by a paradox created in The Drawing of the Three - a memory that both exists and cannot exist - while the group encounters Blaine the Mono, a psychotic monorail AI with a fondness for riddles and a desire to die. The third novel expands the world significantly, introducing the ruined city of Lud and the fading technology of the Old People. It ends on one of the series' most notorious cliffhangers and is widely regarded as the point at which the series hit its full stride, balancing world-building, character, and momentum more successfully than either predecessor.