Brid, CJ, and Patrick Smithfork unhappily move from their cozy Brooklyn apartment to Manhattan's swanky Fifth Avenue and discover the clues to a decades-old mystery hidden in their new home. Behind the walls in their living room, and all throughout their house, are clues left by the original owner--the long-dead Mr. Post. The scrambled words and poems take the Smithfork children on an incredible journey through New York City in search of the Post family fortune.
But New York City is a very big place--how will the Smithfork children ever solve the mystery that begins inside their home
