This Immortal - Definition and Overview

...And Call Me Conrad (also known as This Immortal) is one of Roger Zelazny's earlier novels. This book tied with Frank Herbert's Dune for the 1966 Hugo Award for Best Novel.

After being devastated by a nuclear war, the Earth is a planet with a population of 4 million overrun by a variety of mutated fauna. Worse, the Earth is now owned by a race of blue-skinned aliens called Vegans. Conrad Nomikos is a man with a past that he'd rather not talk about, and he's been given a task that he'd rather refuse: to show an influential Vegan around the old ruins of Earth. But Conrad suddenly finds himself the reluctant protector of this alien visitor when attempts are made on the Vegan's life. Conrad knows that keeping the Vegan alive is important—but now he must find out why.