Clark Kent (Tom Welling) has begun to be aware of his inherent x-ray vision -- a power that proves to be literally a headache to him. Even worse, Clark is unable to control this power, which comes and goes at the most inopportune moments. But our hero's vision problems turn out to be a blessing when Lex Luthor (Michael Rosenbaum) is accused of a theft committed by a unbalanced, shape-shifting young girl named Tina (Lizzy Caplan). ~ Hal Erickson, Rovi