The second book in the acclaimed, bestselling series set in an alternate-history New York City, about three kids trying to save their home by solving the greatest mystery of the modern world: a puzzle laid into the streets and buildings of the city by its brilliant, enigmatic architects.National Book Award finalist Laura Ruby returns with the middle chapter in her epic alternate-history adventure—a journey that will test Tess, Theo, and Jaime and change their lives forever.It was only a few weeks ago that the Biedermann twins, Tess and Theo, along with their friend Jaime Cruz, followed the secrets of the Morningstarrs’ cipher further than anyone had in its century-and a-half history—and destroyed their beloved home in the process.But the Old York Cipher still isn’t solved. The demolition of 354 W. 73rd Street only revealed the next clue in the greatest mystery of the modern world, and if Tess, Theo, and Jaime want to discover what lies at the end of the puzzle laid into the buildings o
