Metamorphosis

S1 E2: Clark discovers that a fellow high school student, Greg Arkin (Chad E. Donella), has been attacked by Kryptonite-affected bugs. Greg has taken on the "eat, molt, mate, die" life cycle of an insect -- with Lana as his prey. Clark must rush to save her without revealing his superpowers. Meanwhile, Lex possesses Lana's Kryptonite necklace and ponders what to do with the strange stone.