Who bumped off the CEO of Eurisko, the giant of computer software companies? And who sent an FBI sidekick of Mulder's plunging to a hideous death? As agents Mulder and Scully track an evil computer virus through cyberspace, the database of suspects keeps scrolling out one name: Brad Wilczek, the weird, wired computer whiz kid.

Is Wilczek at the keyboard of a computerized slaying system? Or has the mad-at-the-world scientist created a mechanical Frankenstein that even he cannot control? In a maze of high-tech terror, Mulder and Scully must find the access code to hard-disk horror ...