WOLVES OF THE CALLA is the fifth volume in Stephen King's epic Dark Tower series. The Dark Tower is soon to be a major motion picture starring Matthew McConaughey and Idris Elba, due in cinemas August 18, 2017. In the fifth novel in StephenKing's bestselling fantasy series, Roland and his ka-tet are bearing through the forests of the Mid-World on their journey to the Dark Tower. Tracking their every move is a group of farmers from the town of Calla Bryn Sturgis. The trackers have been warned that the Wolves, a band of masked riders, are about to gallop out of the dark land of Thunderclap and raid their town. And they want to enlist the help of the four gunslingers. How can Roland and his tet both protect the innocent community and return to New York to save our world's incarnation of the Dark Tower from the machinations of the evil Sombra Corporation?.