The Dark Tower IV: Wizard and GlassThe Dark Tower IV: Wizard and Glass beckons Roland, the Last Gunslinger, and the four companions he has gathered along the road. Having narrowly escaped one world, they set out on a terrifying journey across the scarred urban wasteland to brave a new world where hidden dangers lie at every junction: a malevolent computer run monorail hurtling towards self destruction, Roland's relentlessly cunning old enemy, and the temptation of the wizard's