Scully and Mulder discover a mysterious serial killer when they find that their current investigation is similar to an unsolved case from 1903.
Mulder and Scully race to prevent an old adversary and recent prison escapee from taking revenge on Mulder.
A team member turns their hand to a new role, and Walter uncovers a key piece needed to defeat the Observers.
A retired mobster (Telly Savalas) and his son raise Eastbridge's crime rate.
MacGyver leads a U.S./Soviet expedition into the Arctic to recover Russian gold from a downed World War II plane.