This is the 4th novel in the Lunar Saga (that started as a single novel and became a 2-book story then a trilogy and now this ).After making an underground inferno harmless and creating the Moon's first active volcano in millennia, Tom Swift is now trying to help the residents of the former slave colony on the dark side of the lunar surface as they try to build the first off-planet resort. But, there are difficulties that must be overcome.At the same...