This book posits the notion that our Moon is a hollow construct manufactured in the distant past and placed in its near-circular orbit by an intelligence unknown to us. It cites research, knowledge gleaned from our visits there, and rational argument to support this hypothesis.
If you consider such an idea as preposterous and fear new ideas that fly in the face of received wisdom, then you are in the majority; such a stance is perfectly natural and human. Don't bother to read it.
On the other hand, if you have the courage to "think the unthinkable", and a genuine interest in the advancement of human knowledge, you will find it "unputdownable".
However, it does have to be said that the few illustrations it contains are of poor quality.