Twenty-five years ago, a group of Harvard students pulled a "prank" on underclassman Paul Chapin that went wrong and permanently damaged his leg. Some students became friends with Paul, and the more guilt-stricken ones formed a "League of Atonement". Now, Paul is a successful novelist who writes stories that may be violent revenge fantasies. Or are they just fantasies? Two members of the League have died recently, and an anonymous writer has sent threats to the remainder of the League. When league member Andrew…