The Secret City

It starts with a mysterious map. It leads to an underground adventure. When George van Gelder finds an old treasure map hidden in his attic, he knows he’s onto something. After all, his house was built by the notorious Captain Kidd — the pirate whose stolen treasure has been lost for centuries. But when the map leads to a mysterious network of trap-laden tunnels far beneath his home in New York City, it becomes clear that there was more to Kidd’s plan than a map — and more at stake than a treasure.