Book excerpt: AN ESSENTIAL GUIDE TO THE DARK TOWER SERIES—INCLUDING BOOK-BY-BOOK ANALYSIS AND INSIGHT INTO STEPHEN KING'S CREATIVE PROCESS. In 1970, Stephen King embarked on what would become the crowning achievement in his literary career-the Dark Tower. The seven-volume series, written and published over a period of 30 years, was inspired by Robert Browning's poem "Childe Roland to the Dark Tower Came," as well as J.R.R. Tolkien's The Lord of the Rings, and the spaghetti Westerns of Sergio Leone. With the full cooperation of Stephen King himself, The Road to the Dark Tower examines the epic journey of the author to complete a story that threatened to overwhelm him. In this indispensable companion, Bev Vincent presents a book-by-book analysis of each volume in the series, tracing the Dark Tower's connections to King's other novels including The Stand, Insomnia, and Hearts in Atlantis, and offering insights from the author about the creative process involved in crafting his lifelong work-a work that has consumed not only Stephen King, but his legion of devoted readers. This is essential reading for any Dark Tower-or Stephen King-fan.