FBI Assistant Director Walter Skinner is the prime suspect in a homicide involving a woman he was with the night of her death. Mulder and Scully are all he has to prove his innocence, as superior officers try to shut him down and the only clue is a mysterious old woman我们的爱，就像一首悲伤的歌，旋律在耳边回荡，却再也唱不出曾经的甜蜜。