In this 9th book in the Tom Swift Invention Series, Tom must suffer disappointment when a contract to build habitats for a Moon colony go to another, inferior, bidder. The result is a catastrophe, and Tom must mount a mission to recover the bodies of nearly a third of the colonists. When Swift Enterprises offers to build a protection system, that offer is rebuffed for no good reason. Angry, Tom decides to set his sights on an even more ambitious project:...