Clark learns that the Green Arrow (Justin Hartley) -- whose public identity is Oliver Queen -- 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 find out that Oliver is taking a super-drug that helps his body heal itself -- but has severe side effects. Meanwhile, Lana makes a shocking discovery that will impact her relationship with Lex.

Season 6 | Episode 7

Allison Mack

Chloe Sullivan

Annette O'Toole

Martha Kent

Erica Durance

Lois Lane

John Schneider

Jonathan Kent

Kristin Kreuk

Lana Lang

Michael Rosenbaum

Lex Luthor

Tom Welling

Clark Kent