Overview
Count Zero is a science fiction novel by American-Canadian writer William Gibson, originally published in 1986. It is the second volume of the Sprawl trilogy, which begins with Neuromancer and concludes with Mona Lisa Overdrive, and is a well-regarded early example of the cyberpunk subgenre.
Count Zero was serialized by Isaac Asimov's Science Fiction Magazine in the 1986 January (100th issue), February and March issues, accompanied by black and white art produced by J. K. Potter. The January cover is devoted to the story, with art by Hisaki Yasuda. The magazine version was edited to contain less swearing and sexual content.
Plot introduction
Seven years after the events of Neuromancer, strange things begin to happen in the Matrix, leading to the proliferation of what appear to be voodoo gods (hinted to be the fractured remains of the joined AIs that were Neuromancer and Wintermute).
Two powerful multinational corporations, Maas Biolabs and Hosaka, are engaged in a battle for control over a powerful new technology (a biochip), using hackers and the Matrix as well as espionage and violence.
From Wikipedia (CC BY-SA 4.0).