Ep 16. Young at Heart

In The X-Files season 1 episode 16 titled "Young at Heart," Mulder and Scully are lured into a trap by a criminal who was once believed dead. The episode begins with the convict, John Barnett (played by Brad Dourif), escaping from a high-security prison. Barnett, who was once a friend of Mulder, has a personal vendetta against the agent and is plotting revenge. He plans to use his knowledge of the X-Files to manipulate Mulder and put Scully's life in danger.

Mulder and Scully are called in to investigate a series of bank robberies in which the perpetrator seems to be an older man. When they arrive on the scene, Mulder immediately recognizes the criminal as Barnett. Barnett has undergone an experimental treatment that has reversed his aging process, making him appear much younger than he actually is. Mulder believes that Barnett has come back to seek revenge for Mulder's testimony that put him behind bars.

As Mulder and Scully pursue the case, they also discover that Barnett has been in contact with a scientist who has been experimenting with the same treatment that has made him young again. Barnett has been attempting to steal the formula and take it for himself so that he can remain young forever. Mulder and Scully race against time to stop Barnett before he can carry out his revenge and get his hands on the formula.

As the story unfolds, Mulder is forced to confront his own past and the guilt he feels for being responsible for Barnett's conviction. He grapples with his resolve to do whatever it takes to stop Barnett while also trying to protect Scully from danger.

Throughout the episode, Mulder and Scully's relationship is tested, with Mulder's obsession with the case causing him to overlook important evidence and endanger Scully's life. Scully, meanwhile, begins to question Mulder's judgment and his motives for pursuing the case.

In the end, Mulder and Scully are able to apprehend Barnett and prevent him from getting his hands on the formula. But the episode ends on a tense note as Mulder realizes that he may have inadvertently put Scully's life in danger, causing him to question his priorities and his commitment to the X-Files.

"Young at Heart" is an intense episode that delves into the complex relationship between Mulder and Scully and raises important questions about the nature of obsession and revenge. With its well-crafted storyline and excellent performances from its cast, it is a standout episode in the first season of The X-Files.