The Off Season by Colleen Thompson

Winter winds off the Atlantic have turned the tourist mecca of Seaside Creek, New Jersey, into a ghost town. Dr. Christina Paxton, however, is growing accustomed to living with ghosts. Recently widowed, the emergency room physician has returned to the shore with her young daughter, house-sitting a sprawling beachside Victorian home. One night, her two-year-old calls her by a name that makes Christina’s blood run cold and sends her thoughts spiraling back thirty years.

Deeply unnerved, and certain someone else is in the house, she flees with her child into the cold night, only to come face-to-face with Chief Harris Bowers, a former classmate with whom Christina has a complicated history. Now divorced, Harris hopes to mend their past, but Christina is wary of being played for a fool again. As threats emerge, Christina and her small family find themselves in grave danger. It seems there is no one she can put her trust in—least of all herself.