Martha’s father William comes to town after many years of estrangement due to his disapproval of Jonathan. Meanwhile Clark must deal with a series of old-age deaths at Smallville High, and the new principal puts his foot down.
Lana has a new stalker - a boy imprisoned in his basement by his parents who sneaks out at night to visit her. Meanwhile Lionel hires Clark’s mother as his personal assistant.
Clark has his first run-in with red kryptonite in this exploration of classic Superman mythology, turning immoral when he gets his high-school ring holding a piece of rock. Meanwhile, Lex and his father have some issues to resolve when Lionel starts taking over the manor.
Pete finds Clark’s spaceship, forcing Clark to reveal his secret to his best friend. Dr. Hamilton is plagued by kryptonite-fueled illness and focuses on Pete. Meanwhile, Lana has to deal with Nell and her plans to remarry while Lex and Lionel adjust to life together.
Clark gains a new power: heat-vision. As he struggles to control it, Lex gets married to the new Smallville High teacher, Desiree Atkins. Little does he know that she not only has an ulterior motive; but that she’s coming on to Clark, too.
