Director: Michael Lange
When Lieutenant General MacDougal is killed in the back of his limousine, his driver is suspected, especially after he is linked to a Paramilitary group called the Right Hand. But the driver maintains his innocence and is cleared of blame when lab tests results reveal he had not fired a weapon. With a number of high ranking military officials due in for a re-dedication ceremony at the Vietnam War Memorial, Assistant Director Skinner assigns Mulder and Scully to investigate the Right Hand group and it's leader Denny Markham for complicity in the Generals murder.
Markham gives the two agents a photograph of a Green Beret, Nathaniel Teager, captured by the Viet Cong in 1971, freed by Markham's group in 1995 who then disappeared after US Government commandos attempted to kidnap him. Mulder discovers that MacDougal along with another General Steffan signed Teager's death certificate. Concerned that Teager maybe targeting Steffan, Mulder arranges for two FBI agents to protect him. However Teager manages to slip by the agents and kills Steffan in his office in the Pentagon. Skinner is outraged especially when Teager's shadowy image is caught on security camera. Mulder believes that Teager has learned from his captures the ability to hide himself from a person's field of vision. When Mulder's contact Marita Covarrubias informs him that the government has sanctioned Teager to kill the Generals the race is on to stop a seemingly unstoppable assassin.
When Nathaniel Teager confronts Mrs. Davenport in front of the Vietnam Memorial, two of the names visible on the wall behind her are Jesse R. Ellsion and Harlan L. Hahn. Harlan Ellison is a famous science fiction writer and fan of the show. Jessica Hahn is well-known for the scandal involving her and Reverend Jim Baker.
''Unrequited'' isn’t a very memorable episode despite the good storyline. It just isn’t able to grab a lot of interest and is easy to forget. Still, not a bad episode by all means.
Scully: A phantom POW left for dead comes back to avenge the injustices?
Mulder: Maybe the war ain't over, Scully.
Skinner: Right now I'm flying by the seat of my pants.
Mulder: You mean there's no procedure outlined for an invisible assassin?
Season Number: 4
First Aired: Sunday, February 23, 1997
Production Code: 4X16