smallville Season6 Episode8

Another phantom zone escapee, who feeds on human bones, is eliminated by a mysterious bold man who is more powerful than Clark. Bronson escaped from Level 33.1, Lex's secret laboratory which is dedicated to research people who has been affected by meteor rock; he kidnaps Lex imprisoning him in a different frequency plane, threatening to kill Lana if Lex doesn't tell him what he has done to the place after he finds out the laboratory is gone. With Jimmy's help, Chloe is able to get them back to the normal frequency, but not before Lex kills Bronson.
In the end, Lex proposes to Lana.