Estimated Ship Date: 5/14/19

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In a steampunk New York City, the Biedermann twins having seen their family’s home on West 73rd Street destroyed, thought they had the answer to the Morningstarr Cipher. But all that they found was the next clue to the centuries’ old mystery that the enigmatic architects built into the very fabric of the city.

With enemies closing in from all sides, the twins and their best friend Jaime must race to unravel the rest of the clues, even as the foundations of the city threaten to crumble underneath them. As the kids are drawn deeper into the mystery, they’ll have to decide if they’re truly willing to pay the price of discovering the secrets of the Morningstarrs. Your young readers will be kept on the edge of their seats as the Biedermann twins return to face new, mind-boggling puzzles.