S7, E14: Lionel arranges to have Clark kidnapped and held in a kryptonite-lined cell at a LuthorCorp facility. After Chloe and Lana find a military electric probe at the farm, they confront Lionel, who throws suspicion onto Lex. Chloe and Lana take Kara to the Fortress and beg Jor-El to restore Kara's memory, as she is the only one who can save Clark.