Smallville VI (7/22)

Clark learns that the Green Arrow (recurring guest star 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.

Tom Welling, Michael Rosenbaum, Allison Mack, Kristin Kreuk, Annette O'Toole, John Schneider