Smallville - Season 3 [exclusive] -

Clark breaks into the Belle Reve mental hospital to rescue Lex. But he’s trapped in a cell lined with Kryptonite. Meanwhile, Lex faces electroshock therapy. It is brutal, claustrophobic, and a career-best performance from Rosenbaum.

Are you a fan of the early seasons of Smallville? Do you think Season 3 is the darkest, or does Season 5’s "Reckoning" take the crown? Share your thoughts in the comments below! Smallville - Season 3

Editor's Note: A common fan-favorite highlight often misattributed to this era involves the introduction of later villains, but Season 3 focused heavily on the established cast. However, the introduction of new mythos elements was crucial. Clark breaks into the Belle Reve mental hospital