Amazon.com description: Product Description: A design manual 80 pages of text and 45 drawings on how to design secret rooms and secret compartments to protect valuables in any home or place of business. If a thief cannot find your valuables he cannot steal them.A secret room is a superior defense against burglary because even a professional thief is placed at great disadvantage. It tricks his eye. It fools his mind. A secret compartment causes your valuables to become invisible. A safe or locked cabinet screams for a burglars attention, but a hidden compartment renders him helpless. It gives him no target, no hinge or hasp to pry off, no lock to drill into.It provides him with nothing at all, and that is the beauty of it.