Book IV of The Dark Tower. The dark tower beckons Roland, the gunslinger. Roland is determined to make the journey with the companions he has gathered: Susannah Holmes, wheel-chair bound; Eddie Dean, a narcotic prisoner, a boy named Jake and his pet creature Oy. Through the devastated urban wasteland to the Mid-World where cavernous black holes threaten the structure of the tower, time grows thin and the past becomes a riddle. The malevolent monorail hurtles ever on, threatening destruction as the pilgrims bargain desperately. There is hidden danger on all sides: from the terror of Roland's relentless cunning enemy to the temptation of the wizard's glass. Cover art by Bob Warner.