Smallville Episode Details!

Episode 7x17 "Sleeper"

Casting notices have gone out for a blonde femme fatale named "Vanessa." Vanessa is a spy investigating one of Smallville's major characters. (Meaning, it's either Clark, Lex, Lana, or Chloe who's being spied on).

Source: KS

AND REMEMBER:SMALLVILLE RETURNS TONIGHT WITH THE RETURN OF PETE!!!