Hole in the Water — Robert Kearney

In the shadow of his father's death, Chuck Hausman has come home. With his new wife, Gretchen. His stepdaughter, Kara. And a dark past he cannot escape.

For on a desolate island in Lake Superior, the people who have known Chuck longest revile him most. Now, layer by terrifying layer, Gretchen begins to uncover the chilling sins long hidden in her husband's heart. Is Chuck the innocent man he claims to be, or is he a cold-blooded killer? Blinded by fear, trapped by water, Gretchen and Kara take desperate flight for their lives. . . .