Watch Smallville S01e (5) [2026]

In classic comic book fashion, the villain's name, Sean Kelvin , is a direct nod to the Kelvin temperature scale.

The episode centers on , a high school athlete who falls into an icy, kryptonite-filled lake. He survives but emerges with a dangerous condition: permanent hypothermia that forces him to absorb the body heat of others to stay alive, effectively freezing them to death. Watch Smallville S01E (5)

Critics noted the impressive visual effects for its time, particularly the "ice flame" scene where candles freeze instantly as Sean passes them. In classic comic book fashion, the villain's name,

This episode establishes Lex's early role as a mentor to Clark , famously advising him that "a high school boyfriend is not a husband, he's an obstacle". Critics noted the impressive visual effects for its

This episode marks the first of many times Clark must sacrifice his personal happiness and budding relationship with Lana to fulfill his duty as a protector.

Clark is faced with a major dilemma when he has to choose between a long-awaited date with Lana Lang—secured with concert tickets provided by Lex—and saving Chloe Sullivan from Sean's deadly touch.