Smallville: Crimson

Lois puts on a love-potion lipstick made of red kryptonite and quickly lusts for Clark. She kisses him, reigniting the Dark Clark inside him. Red kryptonite-fueled Clark destroys Lex and Lana's engagement dinner and kidnaps Lana so that he can force her to be with him. And after a fight with Lex, Lana finds a clue to Clark's secret. After Lana is checked by Lex's doctor, its is revealed that there is something more sinister about Lana's pregnancy than even she realizes.