CLARK FACES BIZARRO, HIS TOUGHEST ENEMY YET AND SUPERGIRL COMES TO SMALLVILLE – Clark (Tom Welling) confronts Bizarro, the last wraith from the Phantom Zone, and the ensuing fight causes the dam to break and a torrent of water rushes towards the land. Lex (Michael Rosenbaum), having just been arrested for Lana’s (Kristin Kreuk) murder, is submerged under water in a patrol car, but is saved by a mysterious young woman. Lois (Erica Durance) manages to pull Chloe (Allison Mack) to safety but her cousin is pronounced dead at the hospital. The same woman who saved Lex reappears at the Kent farm and is revealed to be Kara Kent (Laura Vandervoort) A.K.A. Supergirl, Clark’s cousin from Krypton.
MARTIAN MANHUNTER RETURNS – When Clark discovers Lionel threatened to kill him unless Lana married Lex, he goes after Lionel to silence him once and for all. Lana tells Lex she is leaving him, and Martian Manhunter makes a return appearance 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 super soldiers. Meanwhile, Lois goes to Reeves Dam in search of information about Lex’s secret lab and is brutally stabbed by a security guard. Chloe’s secret power is revealed.