A computer-run building operations system goes awry'killing thecompany CEO and the FBI investigator assigned to the case. Mulderand Scully's preliminary investigation shows that only one person hasthe technical know-how to override the system: Brad Wilczek, thehigh-strung young computer whiz who created the program. But isWilczek the driving force behind the havoc? Or has the CentralOperating System developed a malevolent mind of its own . . ?