Mulder becomes trapped aboard a train rigged with an explosive device. Scully searches for the truth behind the government's secret experiments.
Now aboard the mysterious train, Mulder locates the car containing the scientific equipment and what appears to be the autopsy room he saw in the video he purchased. There is also an assassin on board who claims to work for the NSA. When they are locked in, he reveals that there is a bomb aboard which is set to go off and destroy any evidence on the train. Scully meanwhile traces her implant to a medical research facility in West Virginia which she feels provides a logical explanation for what has been happening - rogue medical research by a Japanese scientist working without authority. Mulder remains convinced the work was to create a human-alien hybrid.—garykmcd
While Mulder remains on the passenger train he believes is holding an alien captive, Scully is led to a disease research facility in Perkey, West Virginia, where she is told ordinary men were subjected to tests. Amidst lies and doubts, Mulder must stop the train - or at least its bomb.—EJS