William MacDonald

When Mulder and Scully investigate a possible UFO crash site, Mulder is arrested and meets a man in jail obsessed with UFOs. When Mulder is released, he goes back to the crash site to see if there was a government cover-up operation.

Two deaths are attributed to a human-sized parasite and the case leads officials to rethink the closing of the X-Files.

Mulder and Scully track a serial killer whose gruesome MO includes leaving many victims but few clues.

Oliver is promoted to Acting Staff Sergeant and a new rookie joins the force.

Emma is hired to consult on the acquisition of a castle-like estate that local legends claim carries a curse.

An unexplainable photograph left at the crime scene provides Mulder and Scully with their only clue in an abduction case.