Smallville: Season 7, Episode 17

7 - 17: Sleeper

While Clark tries to find Brainiac and Kara, Chloe inadvertently draws the government's attention with her computer searches. A NSA agent forces Jimmy to spy on his girlfriend and determine if she's working for a terrorist cell as they suspect. Meanwhile, Lex recovers the box in Zurich and discovers there are people who will kill to keep him from obtaining its secrets.