Stoneheart

A city has many lives and layers. London has more than most. Not all the layers are underground, and not all the lives belong to the living. Twelve-year-old George Chapman is about to find this out the hard way. When, in a tiny act of rebellion, George breaks the head from a stone dragon outside the Natural History Museum, he awakes an ancient power. This power has been dormant for centuries but the results are instant and terrifying: A stone Pterodactyl unpeels from the wall and starts chasing