Three explorers are sent from their home on the Moon to Jupiter's moon Europa to search for signs of a long-lost alien race in hopes of finding some ancient technology they can use to fight against an evil race of machines. Meanwhile, a business competitor who was publically shamed when his invention failed was persuaded by an employee of his that he should get his revenge by murdering the explorers and stealing their discoveries for his own. While the exporers are battling monstrous alien fish in the deep ocean under the ice on Europa they must also outwit their wily competitor. The explorers discover a friendly alien race on Europa and work with them to evade their enemy, but they do not discover what they came to find.
The review of this Book prepared by Jonathan Cooper