Krentz, Jayne Ann. Fogg Lake trilogy.

Sequel to: The vanishing

North Chastain possesses a paranormal talent that gives him the ability to track down the most dangerous psychic criminals. When his father suddenly falls into a coma-like state, North is convinced it was caused by a deadly artifact that traces back to the days of a secret government program known only as the Bluestone Project. He is good when it comes to tracking down killers, but to locate the relic he's going to need help from a psychic who knows the shadowy world of obsessive collectors. With her reputation in ruins after a false accusation, antiques expert Sierra Raines is looking for a fresh start. When North Chastain approaches her for help, Sierra takes him on as a client, though not without reservations. North and Sierra soon find themselves at the scene of the Incident, which occurred decades ago in Fogg Lake. The town and its residents were forever changed by the disaster in the nearby Bluestone Project labs