Confessions of the Dead From the authors of Death of the Black Widow

The dead tell no tales…unless they swam in Cemetery Lake.
 
Hollows Bend, New Hampshire, is a picture-perfect New England town where weekend tourists flock to see fall leaves and eat breakfast at the Stairway Diner. The crime rate—zero--is a point of pride for Sheriff Ellie Pritchett.
 
The day the stranger shows up is when the trouble starts. The sheriff and her deputy investigate the mysterious teenage girl. None of the locals can place her. She can’t—or won’t¾answer any questions. She won’t even tell them her name. 
 
While the girl is in protective custody, the officers are called to multiple crime scenes leading them closer and closer to a lake outside of town that doesn’t appear on any map…   

James Patterson is the most popular storyteller of our time. He is the creator of unforgettable characters and series, including Alex Cross, the Women’s Murder Club, Jane Effing Smith, and Maximum Ride, and of breathtaking true stories about the Kennedys, John Lennon, and Princess Diana, as well as our military heroes, police officers, and ER nurses. He has coauthored #1 bestselling novels with Bill Clinton and Dolly Parton, told the story of his own life in James Patterson by James Patterson, and received an Edgar Award, nine Emmy Awards, the Literarian Award from the National Book Foundation, and the National Humanities Medal.