This is a compelling and intriguing novel of obsession and deception set to shake the foundations of family relationships. Mosaic artist Linda Graham has, up until now, been fortunate in life. She is happily married, with two wonderful children, Ciaran and Katie, and a beautiful home with a dream garden just outside Dublin. Her world is safe and uncomplicated, and it's one she has always taken for granted. That is until Jon, a friend of Ciaran's from University, inveigles his way into their lives. There's something about Jon which Linda finds unnerving - he seems almost too perfect. Her suspicions are confirmed when it becomes apparent that he is responsible for a spiral of events which contribute to the gradual disintegration of her family. When Jon leaves, his disappearance is even more destructive than his presence. Linda's quest to track him down reveals surprising and sinister information about his past and the reason for his existence in their lives. Linda knows that Jon is out there somewhere - watching, waiting, malevolent. And she also knows that she must do whatever it takes to protect the most precious thing she has left - her family.