A lightning strike transfers Clark's superpowers to a classmate, who begins to abuse his new abilities. Meanwhile, Lex thinks he has proof of Clark's superpowers.
An eight-year old girl is the prime suspect in a series of bizarre, seemingly unrelated deaths.
Mulder and Scully face the prospect of becoming human sacrifices when they uncover a Satan-worshipping cult led by a demonic substitute teacher.
The true birth father of small-town babies born with vestigial tails turns out to be a chameleon-like man capable of impersonating anyone – including Mulder.
Archaeologist Emma Fielding seeks evidence of a 17th-century Maine settlement predating Jamestown. But a dead body she uncovers leads her and her students to dig deeper.