A legendary science fiction story, this trilogy, brought back into print in one single volume, presents hero Jason dinAlt as he discovers three separate planets. dinAlt finds excitement and intrigue as he investigates Pyrrus, a strange place where all the beasts, plants, and natural elements are out to destroy man; the unknown second planet, where every man has to kill other men or live as a slave; and Felicity, where creatures are bred for thousands of years for a single deadly purpose.
On the planet Pyrrus, human colonists have fought a centuries-old war with the native life forms. These life forms adapt to human tactics and technology, evolving new species so rapidly that natives returning from even brief trips off planet must be carried in protective armor canisters from their ship to the safe buildings, where they will learn of the latest deadly threats. "The Ethical Engineer" is the second volume in the DEATHWORLD series. It was originally published as a two-part serial in ANALOG magazine in 1963.
The planet was called Felicity. The name was a joke except for those compelled to settle there. Inhabiting it were beings bred for thousands of years for a single purpose: to attack and kill. Jason knew this. But he also knew the planet on which he lived was moving towards certain disaster. And Felicity was the only spot in the universe where he and his companions could survive. He thought he had worked out the perfect plan. But what awaited him on Felicity went far beyond his wildest imagining.