Wild things - Christopher Golden

A series of mysterious deaths leads Jack Dwyer and Molly Hatcher to the fastlanes, rest stops, and all-night diners of a highway in upstate New York. Meanwhile, their friend Bill Cantwell heads to Manhattan in search of his missing niece, who disappeared months ago when trying to build a career in New York's fickle music scene. Back in Boston, Jack's sister, Courtney, is left alone to hold the fort. But Jasmine, a deadly and vengeful enemy, is growing in strength. She barely survived her run-in with them in Boston but has now begun to collect a new pack of fellow predators in New York. When Bill probes the Prowler underground, he finds old friends, secret alliances, and betrayal. His predicament draws Courtney away from safety to try and protect the man she loves.
To the north, Jack and Molly uncover the frightening truth -- that with Jasmine to lead them the Prowler pack has grown larger than they could ever have anticipated. With Prowlers all around them they must reach out to all of their allies, dead or alive, if they are to save Bill and Courtney and survive the final cataclysmic confrontation with the killers on their trail.

Christoper Golden has been voted among the top ten science fiction and fantasy authors by the readers of SFX magazine every year from 2000-2005 inclusive. He is the author of several dark fantasy novels and comic books in addition to numerous Buffy the Vampire Slayer adult novels and reference books which have made him a major UK bestseller.