Mitchell Kosterman

Lex marries Desiree Atkins, the new teacher at Smallville High, unaware of her true motives and that he is not the only man she has been flirting with. Meanwhile, Clark struggles to control his newest power - heat vision.

Clark discovers that a brooding stranger who is usually kept locked up in chains has been leaving love notes for Lana at her parents' grave.

A series of sexually oriented murders that are identical, except that the killer appears to be both male and female, draws Scully and Mulder to an Amish-type community of people who may be alien in origin.

Mulder reluctantly accepts a new partner, Agent Alex Krycek, and they investigate the deaths of several Green Beret soldiers who participated in a sleep deprivation experiment during the Vietnam War.

A woman claims to be Clark's mother, prompting the Kents to reveal what happened the fateful day they found their adopted son in a cornfield.

Ryan (from "Stray") returns and Clark has to save him from Dr. Garner of the Summerholt Research Facility. Meanwhile, Aunt Nell leaves Smallville, and Lex wants to expand the plant but runs afoul of the mayor.