Deathworld 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.