Synopsis: It took the light of the supernova Briareus Delta one hundred and thirty-two years to cross space to the Solar System. But the night it exploded in our sky was a night that would never be forgotten in the history of the world. For in that bath of cosmic particles, all things changed. Not only the weather and the flora and fauna, but humanity itself received what seemed to be its death sentence. Sterility signalled the end of man, until the strange children known as the Zeta-mutants began to appear. Richard Cowper, author of Clone and other sf novels, has produced in this new novel a gripping story of how one man coped with the terrible dilemma of his world - how he attempted to solve the problem of the girls with the amber eyes and what he did when he found out what he himself had become during The Twilight of Briarseus. (from the back cover of the DAW Books first printing)