A band of immortals - as charming a bunch of eccentrics as you'll ever come across - recruit a new member, the brilliant Cherokee physicist Sequoya Guess. Dr. Guess, with the Group's help, gain control of Extro, the supercomputer that controls all mechanical activity on Earth. They plan to rid Earth of political repression and to further Guess's researches-which may lead to a great leap in human evolution to produce a race of supermen. But Extro takes over Guess instead and turns malevolent. The task of the merry band suddenly becomes a fight in deadly earnest for the future of Earth.
Original title: Extro
Genre: Fiction→ Horror→ Medical Horror & Evil Science
Fiction→ Science Fiction→ Technology→ Cyberpunk and Virtual Reality
Fiction→ Science Fiction→ Science Fantasy
- Originally serialized in Analog as 'The Indian Giver', Nov, Dec '74, Jan '75