S6, E22: Upon discovering that Lionel told Lana he would kill Clark if she didn't marry Lex, Clark goes after Lionel to silence him once and for all. Lana tells Lex she is leaving him. John Jones (recurring guest star PHIL MORRIS) returns to help Clark stop Lex, who is trying to find the last wraith from the Phantom Zone in order to use its DNA to power his army of supersoldiers. When Lois goes to Reeves Dam to search for information on Lex's secret laboratory, she is brutally stabbed by a security guard. And Chloe's secret power is finally revealed.