The Lost Treasure Map 7 — V. Bertolaccini

A classic action-packed treasure hunt thriller set in New York of the adventures of explorers searching for lost treasure, ancient lost Transylvanian treasure, buried away for centuries at an ancient mansion, once an ancient Transylvanian castle, and of their investigations of strange ghost formations and phenomena, and explorations of the colossal desolate ancient mansion and its legends ...

The explorers are fanatical with discovering the last clue to what they think is a treasure hunt competition, left by the last owner, and deceased billionaire, and they explore the colossal mansion and vast desolate estate racing to get it first ...
Leading paranormal scientists and investigators are brought in after they encounter strange unidentified hauntings, and extraordinary ghostly energy formations, and they uncover the source in a secret chamber, with lost Transylvanian tombs ...