THE GREEN ARROW INJECTS HIMSELF WITH A SUPER-DRUG TO BECOME INVINCIBLE – Clark discovers the Green Arrow was shot while trying to save a couple from a carjacking, but Oliver denies he was injured. However, when Oliver starts displaying erratic behavior, Clark and Chloe investigate and discover he is taking a super-drug that causes his body to heal itself but has severe side effects. Meanwhile, Lana makes a shocking discovery that will impact her relationship with Lex.
CLARK AND LOIS INVESTIGATE CHLOE’S MURDER – Clark (Tom Welling) and Lois Lane (Erica Durance) investigate Chloe’s (Allison Mack) apparent murder, but are stopped by an army officer, General Sam Lane (guest star Michael Ironside), who turns out to be Lois’ father. Lois suspects that Sam knows more about Chloe’s death than he will admit, and Clark discovers that Sam has recently been in contact with Lex (Michael Rosembaum). Jason (Jensen Ackles) arrives from Paris and convinces Lana (Kristin Kreuk) to continue their relationship. Suspecting that Chloe is still alive, Lionel (John Glover) sends an assassin with the power to morph his limbs into metallic weapons to keep Chloe from testifying against him.