After remaining sealed for generations, a hidden room is discovered in the basement of the famed Biltmore Estate. Within the musty, decaying confines of the hidden room, a large mechanical machine comes to light. Crafted with intricate gears, levers, and sophisticated mechanisms, the contraption is hailed as a significant archaeological discovery. The esteemed board of directors overseeing the operations of the Biltmore Estate enlists the expertise of Professor Dr. Daniel Garrison to unravel the purpose and origin of this enigmatic machine.

While Dr. Garrison investigates, readers are transported back to the year 1906, when George Vanderbilt II commissions an inventor to construct this mysterious apparatus. What secrets lie within this machine? Why was it brought into existence?

This compelling tale unfolds across intertwining narratives--the investigation of the machine in the present day and its creation back in 1906--to deliver a captivating and riveting ending.