Smallville: Season 7, Episode 4

7 - 4: Cure

Chloe learns that a doctor, Dr. Curtis Knox, has been treating meteor-infected people and removing their abilities. Desperate to get rid of her powers, Chloe makes an appointment to see him, unaware that Dr. Knox has a nefarious plan to kill his patients and harvest their organs. Meanwhile, Kara cons Jimmy into helping her locate her crystal and defies Clark's order to stay on the farm after she discovers its whereabouts. Lana sets up secret surveillance of Lex.