"The Dark Tower" is a series of eight books written by Stephen King. It is a unique blend of fantasy, science fiction, horror, and Western genres. The series centers on Roland Deschain, the last Gunslinger, in his quest to find the Dark Tower, a mystical structure that stands at the nexus of time and space. "The Dark Tower" series is notable for its complex narrative structure, intertwining plotlines, and deep connections to Stephen King's other works. It explores themes of destiny, heroism, sacrifice, and the nature of reality itself.