We can notify you when we add a copy of this item to our inventory using your account.
Expecting it to be available?
We double-check our inventory before displaying available copies to you which
sometimes means an "in stock" item will have no copies available for purchase. We are
working to improve this part of our online experience.
After moving from London to an old mansion on the English coast, eleven-year-old twins Jason and Julia discover that their new home has twisting tunnels, strange artifacts from around the world, and a mysterious, locked door.