Seventeen-year-old Bret is a senior at the exclusive Buckley prep school when a new student arrives with a mysterious past. Robert Mallory is bright, handsome, charismatic, and shielding a secret from Bret and his friends even as he becomes a part of their tightly knit circle. Bret’s obsession with Mallory is equaled only by his increasingly unsettling preoccupation with the Trawler, a serial killer on the loose who seems to be drawing ever closer to Bret and his friends, taunting them—and Bret in particular—with grotesque threats and horrific, sharply local acts of violence.