Needful Things by Stephen King paperback mass market (rescued)

In Stephen King's "Needful Things," a mysterious stranger named Leland Gaunt arrives in the small town of Castle Rock, Maine, opening a shop called "Needful Things" that seemingly sells the perfect item for every resident, but at a sinister price: the customers must perform a small, seemingly harmless prank against another townsperson in exchange for their desired object; as the townspeople indulge in their newfound possessions, their petty grievances escalate into chaos and violence, revealing the true nature of Gaunt as a malevolent force feeding off the town's growing discord. 

Genres: Novel, Horror fiction