THE OUTBREAK OF A GROTESQUE PLAGUE IN A PRISON TRAPS SCULLY IN THE PATH OF AN EPIDEMIC AS MULDER CHASES ESCAPED FELONS WHO MAY BE CARRYING THE DISEASE INTO SOCIETY.
When two prisoners break out of a federal penitentiary, Mulder and Scully are surprised to be assigned to the case. But when they learn that a deadly disease is infesting the inmates, they fear the contagion may be about to be loosed on the populace by the escapees. In a frantic race against time and biology, Scully must help discover the origin of the plague and ensure its containment. Her research convinces her that this outbreak was no accident, and may be part of a massive conspiracy and cover-up. Mulder's attempts to get to the bottom of the cover-up are thwarted by a sniper, The Cigarette-Smoking Man, and his own superiors.