London, 1985. Joe, father to eleven-year-old Matty, has disappeared, and nobody will explain where he's gone, or why. In the long, hot summer that follows, Matty's hunt for Joe leads to the ponds at Hampstead Heath. Beneath the water, there is a new kind...

London, 1985. Joe, father to eleven-year-old Matty, has disappeared, and nobody will explain where he's gone, or why. In the long, hot summer that follows, Matty's hunt for Joe leads to the ponds at Hampstead Heath. Beneath the water, there is a new kind...