Smallville | 6x17 – ‘Combat’

March 22, 2007 – Since Lana’s wedding, Clark has devoted himself to bringing wanted criminals to justice, by any means necessary. Getting a tip from Oliver, Clark learns about an underground fighting ring where Titan, an escaped Phantom Zone criminal, has taken up fighting krypto-warriors. Clark joins the fighting ring to take on Titan. Lana suffers a miscarriage, and Lex destroys all evidence of her pregnancy.