Smallville II (21/23)

After Lana is visited by the ghost of her childhood friend, she turns to Clark for help in uncovering the truth about the strange visitor. However, Clark realizes that the little girl is actually a kryptonite-enhanced clone, and he rushes to save Lana before the revenge-seeking child harms her. Meanwhile, Lex learns that Lionel is funding the cloning research.

Tom Welling, Michael Rosenbaum, Allison Mack, Kristin Kreuk, Annette O'Toole, John Schneider