"As Sophie De Luca has learned, many things really are better the second time around, whether that's a wonderful year of marriage with Goebel, her sweet second husband, or strengthening her bonds with childhood friends Toots, Ida, and Mavis. Yet ever since she and Goebel moved into their new home, Sophie has sensed something a little...unusual. Old houses often contain items left behind from previous owners, but what remains in this case is a painful...

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...