Clark makes an astonishing discovery about his origins -- and faces the choice of his lifetime. Meanwhile, Clark and Lana agonize over a rift with Chloe. Lionel comes closer to solving the mystery of the cave writings. And Lex and Helen's wedding becomes a much more dramatic event than anyone envisioned.

Season 2 | Episode 23


Allison Mack

as Chloe Sullivan

Annette O'Toole

as Martha Kent

Erica Durance

as Lois Lane

John Schneider

as Jonathan Kent

Kristin Kreuk

as Lana Lang

Michael Rosenbaum

as Lex Luthor

Tom Welling

as Clark Kent