Young At Heart: Season 1 Episode 16 

John Barnett, who supposedly died years 前 in prison, comes back to haunt the person who has put him in jail - Mulder. Sending the agent personal notes, Barnett taunts Mulder to try and catch him.
キーワード: x-files, mulder, full episode, scully, the x-files, season 1, episode 16, young at ハート, 心