CLARK AND DOOMSDAY FACE OFF — Oliver (Justin Hartley) tells Clark (Tom Welling) he must kill Davis (Sam Witwer), as Doomsday is a serious threat and must be stopped at all costs. However, Clark struggles with taking a human life, so the Green Arrow and his team decide to take matters into their own hands. Lois (Erica Durance) takes on Tess (Cassidy Freeman), but the fight takes a shocking turn. Meanwhile, Chloe (Allison Mack) gets caught in the middle of Oliver and Clark’s battle over killing Davis.
DC COMICS’ LEGION OF SUPER-HEROES ARRIVE IN SMALLVILLE FROM THE FUTURE TO HELP CLARK STOP BRAINIAC AND THE PERSUADER – The aftermath of Doomsday’s (Sam Witwer) attack on Chloe (Allison Mack) and Jimmy’s (Aaron Ashmore) wedding leaves Clark (Tom Welling) in shock, but before he can search for the kidnapped Chloe, The Persuader (guest star Fraser Aithceson) appears and attacks him. Rokk (guest star Ryan Kennedy), Imra (guest star Alexz Johnson) and Garth (guest star Calum Worthy), also known as The Legion, step in from the future to help vanquish the Persuader and the group realizes Brainiac has taken over Chloe once again. Meanwhile, up at the Fortress, Chloe, as Brainiac, informs Davis he is Doomsday and was created to kill “the other Kryptonian” and destroy the world.