The team discovers striking similarities between themselves and their CGIS (Coast Guard Investigative Services) counterparts when a Navy diver seeking sunken treasure is found dead.

The Top 12 finalists take the stage to perform live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles. This Week's Theme Is: Rolling Stones Performing Tonight Are: Aaron Kelly Andrew Garcia Casey James Crystal Bowersox Didi Benami Katie Stevens Lacey Brown Lee Dewyze Michael Lynche Paige Miles Siobhan Magnus Tim Urban

Naomi enlists Ivy's help in reducing the awkwardness with Liam and the three decide to go on a hike, something Naomi has never done. Naomi discovers Ivy's ulterior motives and confronts her by pushing her face in the sand. Naomi, Silver and Adrianna go shopping in the Palisades and run into Annie and Jasper. Jasper blackmails Annie with photographic proof of her hit-and-run, but she gives Jasper an ultimatum that puts her mind at ease. Adrianna and Gia's friendship continues to develop when the two throw a pity party for themselves. Silver and Teddy toy with the idea of trying to make a relationship work. Ryan meets free-spirited Laurel at a bar, but soon they move to her car so they can get to know each other even better. A surprise visitor shows up on the Wilson's doorstep.

The players compete in a 30-minute cook-off, which requires them to prepare an appetizer, entrée and dessert using only 12 ingredients. Judges Curtis Stone and Ali pick the best-tasting entries and name the winners, who receive a weigh-in advantage. Also: The winners of a surprise food-trivia challenge receive a day of pampering.

Locke sends Sawyer to Hydra Island to investigate the plane, but he encounters Widmore's people instead. Meanwhile, in another life, Sawyer is a police detective looking for Anthony Cooper, the man responsible for his father's death.

The investigation of a drive-by shooting has the NCIS team searching Los Angeles for the dead marine's younger brother who may be the next target and the one with the answers.

Sexy Drew Pragin moves into Auggie's old apartment and immediately clashes with Lauren. She becomes even more upset when he shows up at the hospital as the newest resident. Riley asks Ben for a job, which infuriates Amanda, and David receives life-changing news from an unexpected source. Meanwhile, Ella makes an unrealistic demand of Jonah that backfires.

After a farmer is murdered with an ax, his daughter admits to the crime. Murdoch thinks it is too simple an explanation and calls a psychologist in for his help.

Alone for the first time in a patrol car, Officer Sherman handles the case of a missing girl and a stalker. Detectives Salinger and Bryant find it difficult to work with Det. Puente, the leader of the gang task force. Now partnered with Officer Cooper, Officer Brown struggles to gain command presence and to prove herself.

In an emergency courtroom set up in a hospital, Alicia and Will battle Patti Nyholm and an insurance company that refuses to pay for life-saving in-utero surgery. Meanwhile, Alicia gives Peter a proper welcome home.

After Max gets kicked out of school, Adam and Kristina explore the best educational options for their son. Sarah hits a wall when she ends things with Jim and succumbs to car problems. Meanwhile, Crosby spends a fun-filled day with Jabbar and Julia realizes that she's missing out on her daughter's life.

A deranged father stalks Alex to get him to hook up with his daughter. Thad questions Alex's team spirit because Alex refuses to slap him on the butt. Craig finally musters the courage to confront Denise and have sex with her.

When an escaped convict decides to find out what has happened to his ex-wife and the $180,000 he buried in a house under construction 15 years ago, Raylan chases after him.

When Bruce is nonchalant about Barb still living with her husband who she's separated from, she gets upset and breaks up with him.

Guest: Actor Jude Law talks about his new film "Repo Men".

Rebecca Skloot

TV host Jimmy Kimmel; actress Kirstie Alley; rapper Snoop Dogg presents the Top Ten list.

Actor Hugh Jackman; actress Betty White; Collective Soul performs; St. Patrick's Day Jaywalking.

Aaron is detained for questioning when he seemingly kidnaps T. Abner Hall and must convince S.T.A.N. and Dark Tamara that it wasn't him, but the shape-shifting mutant U.