When Max Morden returns to the coastal town where he spent a holiday in his youth he is both escaping from a recent loss and confronting a distant trauma The Grace family appear that long ago summer as if from another world Drawn to the Grace twins, Chloe and Myles, Max soon finds himself entangled in their lives, which are as seductive as they are unsettling What ensues will haunt him for the rest of his years and shape everything that is to follow