Sabotage accidentally takes Earth's first manned interplanetary expedition to the Moon, where a sublunar adventure ensues, involving two intelligent species and a good deal of fighting as well as romance. The perceptive reader will perceive the author's peculiar notions concerning the behavior of volcanos, an offense against scientific fact that is hard to pardon in a writer of science fiction, but if it can be overlooked, the variety of incident and the fast pace of the action, full of surprises, amply repay the reader's generous indulgence. (Summary by Thomas A. Copeland)
