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.
A Smallville honor student who can clone himself at will kills a teacher to avoid a bad grade, then develops a romantic interest in Chloe and Lana. Meanwhile, Martha feels guilty about her career choices after Jonathan is injured in an accident on the Kent farm while she is at work.