Last week, the first 12 semi-finalists performed, and three contestants moved on to the Top 12. Tonight's episode features performances by the second group of 12 semi-finalists, and America will vote for their favorites. Performing Tonight are: Adam Lambert Allison Iraheta Jasmine Murray Jeanine Vailes Jesse Langseth Kai Kalama Kris Allen Matt Breitzke Matt Giraud Megan Corkrey Mishavonna Henson Nick Mitchell

The Hernandez's oldest child makes his return from Iraq. Meanwhile at the barbershop, Floyd discovers that his extensive time spent at the casino has come back to haunt him.

Darnell, Kiki's brother, arrives with the hope of leaving behind his life as a drug dealer. As Kiki's ex-boyfriend tries to begin some trouble, it's Darnell who comes to her aid. Meanwhile, Malik and his neighbor go out on a romantic date as they move their relationship up to the next level.

This week brings a shake-up no one sees coming when all of the contestants are divided into just two teams, blue and black, leaving many players without their original trainer. Drama ensues, especially with one team who struggles to get used to their new trainer. And contestants are put to the test with one of the longest challenges ever, in which each team tries to put as many miles as they can on their bike in a 24-hour period.

The BAU is called to investigate when a serial killer lures and kills high-powered executives by posing as a high-class call girl.

Locke's fateful mission off the island as Jeremy Bentham is revealed.

Erica is sent back to fix her relationship with her mother.

Adam heads to St. Louis, and its Crown Candy Kitchen, where he tries to down five 24 ounce malt milkshakes in 30 minutes. Also, he makes stops in Pappy's Smokehouse and Iron Barley.

After an eyeball falls from the sky, the team must find who the eyeball belongs to and get to the rest of the evidence before the bird does.

Patty begins to unravel the energy scheme of Dr. Walter Kendrick. Meanwhile, the past of Arthur Frobisher comes back to haunt him.

Crews investigates a brutally murdered man, and it leads him all the way to Claudia, an uncatchable hit woman. Meanwhile, Reese is polygraphed by the FBI before joining a Task Force.

The final contestants perform their final challenge, cooking the best meal they've ever made.

The detectives at the 125 investigate the murder of newspaper journalist Joey Conway. Sam is convinced the killer is the same criminal from a case in 2008. He is motivated by flashbacks to the case, which puts him at odds with his coworkers who think someone else is guilty.

Coming Soon...

Demetri uses mnemonics, the planets and "Dadz" to teach us the importance of "Brains".

Actor Tom Selleck

Tonight Stephen welcomes the Mayor of Braddock, Pennsylvania, John Fetterman.

Naomi thinks she has life figured out. However the arrival of student president elections causes much uproar in her life as she goes head to head with Cook. Soon, she finds all is not fair in love and war, as she begins to test the waters of her confused sexuality.