The Puzzle Bark Tree is the fourth book I've read written by Stephanie Gertler. It may well be my favorite of hers.
Here is an excerpt from the author's website:
Grace Hammond Barnett's happy childhood memories are of times spent with Melanie, her younger sister, and Jemma, the family housekeeper who helped fill the void left by Grace's detached parents. Now a mother herself, Grace feels trapped in her marriage and haunted by dreams of drowning. Her only anchor is her cherished daughter, Kate
When her parents die suddenly, Grace is bequeathed a lakeside house she never knew existed. Leaving her city life, she travels to the house for refuge. here, Grace meets Luke Keegan, who helps her unravel a devastating secret buried in her past. . .
I highly recommend Gertler's books although I have yet to read "To Love, Honor, and BetrayThe Secret Lives of Suburban Wives...