The teams take off from their Pit Stop, a ranch in Mendoza, to Cabana La Guatana, 25 miles away. While several teams enjoy a nice lead following the four-hour penalties taken by teams the previous week, others scramble to catch up. The teams take part in a Roadblock that involves riding a horse to spear a ring in under 40 seconds and one team manages a last-second catch-up, to the shock and surprise of the top teams from the previous week. As these teams enjoy a nice lead, the others struggle to catch up and avoid being eliminated. The Detour for this episode is Shipwreck or Island --- search a seven mile radius for a Shipwreck or find a flag on an island. Generally, most teams complete this with ease, although some have problems with their boats and one is even surprised when they end up at the island when they were looking for the shipwreck. It's another close finish as the trailing teams race for the Pit Stop, hoping to avoid elimination.

Just before mobster Joey Arnello spills the beans in federal court and enters witness protection, he collapses. Is he faking? A court order instructs House to find out and fast. House and his team struggle to diagnose and cure Joey while Joey's brother Bill tries to slow things down and keep Joey from testifying. Meanwhile, Cuddy struggles to convince Vogler that House is an essential part of the hospital.

When a Petty Officer working in the Intelligence receives a pair of blue eyeballs in the mail, the NCIS team starts investigating the case. The sailor commits suicide during the investigation, which leads the team to one of his lecturers, who is working for the CIA in Panama.

The Top 11 finalists will perform LIVE for the nation, vying for the American Idol crown. The contestants will sing their hearts out in hopes of winning America's vote and surviving another week in the competition.

Tonight's theme: Billboard top 100 hits

Performing tonight: Anthony Fedorov, Anwar Robinson, Constantine Maroulis, Harold "Bo" Bice, Nikko Smith, Scott Savol, Carrie Underwood, Jessica Sierra, Mikalah Gordon, Nadia Turner, and Vonzell Solomon.

Jim's pride in Gracie's new-found spelling-bee aptitude quickly turns to dismay when he has to drive her to tournaments all over the state.

Vic's attempt to help a friend find a wayward teenager quickly turns into a nightmare when his fellow cops get caught in a shootout with the missing teen. Vic tracks down a drug dealer in the center of this case who may be linked to Antwon Mitchell (Anthony Anderson), the ex-convict gang banger turned 'community leader'. Vic also suspects that Shane and his new partner, Army, are cozying up to Antwon and his men. David Aceveda (Benito Martinez) spends his last day in the Barn trying to bury Vic for good. With his botched missing teen case and the revelation that he's failed in bringing down the Garage Sting, Vic's future at the Barn looks bleak. Monica steps in and offers Vic a second chance to get back on.

TONIGHT: Star of "The Interpreter," Catherine Keener. Plus, Lewis "Back In" Black.