An edgy janitor takes Clark's high school class hostage at LuthorCorp, claiming his jitters were caused by a mysterious contaminant.
Mulder and Scully investigate a report that some Army test pilots are disappearing after completing their missions.
Mulder must find a way to capture an alien bounty hunter who has been murdering doctors and has kidnapped Scully.
Agent Mulder is discovered unconscious and suffering from hypothermia, but how did he come to be in this state?
Parents face a difficult decision when their young daughter exhibits psychic abilities and is kicked out of school.
