The team has to investigate the death of a naval commander found shot to his death on a navy vessel, while undergoing mandatory psych evaluations.

Brooke, Quinn and Haley decide to use their talents for the greater good. Meanwhile, Julian takes on a directing job and helps out a friend, and Chase mentors Chuck.

Love is in the air at McKinley High when the glee club sets up a kissing booth for Valentine's Day. Things don't go as planned, however, and hearts end up getting broken.

After a friend is attacked, Stephanie tells Jim that she wants to join forces with him to help catch the perp. But when Jim informs Stephanie that he's built for crime fighting - and she's not - the competition is on to see which one of them can solve the case first.

It's Valentine's Day on the ranch, and host Alison Sweeney ushers the contestants into a room full of chocolate candies for a holiday-themed temptation. Whoever eats the most chocolate will have the option to trade two players on their team for two players on the other - or to keep the teams the same, and the winner will be a secret. But as teams are divided into red vs. black, the winner's choice causes upset in the house. Later, a five-part relay race challenge tests the players' endurance, speed, agility, strength and knowledge. Trainer Jillian Michaels takes one contestant horseback riding, and one team gets to enjoy heartwarming videos from home before a weigh-in results in a Biggest Loser record being broken and another player heading home.

Malik reaches his breaking point in rehab, meanwhile Kelly desperately attempts to hang on to the Sunbeams. And Tasha comtemplates revisiting her old relationship when Rick asks her out.

Alex is tasked with assassinating an assassin, a mission that becomes more complicated when her carefully laid plan backfires: JoJo's poisoning efforts go awry, a civilian ("Jeff from Paperclip Depot") gets involved and Claude goes rogue. With JoJo's life hanging in the balance, it all boils down to Alex and her sniper skills to take out the killer. That, and an elevator.

Les makes an out-of-character impulse purchase that turns the pawn shop into an arcade. Then Ashley is threatened by a customer when a negotiation goes too far. And, Les gives a big loan to a customer with an unlikely sob story. Will she repay the loan as promised or has Les been fleeced?

Tensions rise as Leona discovers missing funds from the Band's account while dealing with the complications of hiring a white substitute teacher.

Mike goes to Maine to harvest blueberries to be used for a pie bake-off and later Mike finds out that a candy company is inspired by his boots to make a new jelly bean flavor.

After Callen catches a man breaking into his house, a former KGB operative leads the NCIS team to a shipment of counterfeit computer chips entering the United States.

Jimmy makes friends a single dad and they set up a play date, but Virginia doesn't like the idea because she is the man's housekeeper. However, Jimmy and the guy set out to have a dinner at the Chance household to make peace.

The Hellcats kidnap Marti as her initiation into the group and reminisce about how Alice, Savannah, Lewis, and Vanessa became Hellcats. After the party, Marti realizes that her involvement in Travis's legal case could put her friends in harm's way and potentially cause Bill Marsh to disband the Hellcats entirely.

Friends Mike, Adam and Ethan are each at different points in their lives in terms of their romantic relationships. Mike is married to Lisa and the two have a young son. Family demands stretch Mike thin in terms of time for himself, and he finds himself getting his "me" time watching movies in his car, and thinking Lisa has no idea it's going on, even though she's all too aware.

Dr. Larry Toth, a military psychologist and 'team-breaker', peers inside the heads of Team One individually, exposing deep secrets and faults.

Toby after fighting himself over the guilt of the murder of Det. Marks and the disappearance of his mother decides it's time to use his special gift to help others. He gets an opportunity to use his gift when he saves a woman from nearly drowning and she gets amnesia, unfortunately the victim is not who she presumes.

Detective Adams discovers there are good and bad consequences involved with being in the spotlight as she works on a celebrity's murder. Detective Bryant goes out on patrol as Officers Cooper and Sherman become frustrated with a tedious security detail.

Daniel shows his unaired Super Bowl commercial and hits the dance floor with the Evolution of Dance Guy, one of the web's original viral video stars.

As Alicia races against Louis Canning to round up the most clients for an Erin Brockovich-style class action lawsuit, a mole is detected in the law firm who seems to be working for Canning. Meanwhile, Diane and Will must put their coup on hold as Derrick brings in a Super PAC as a client.

Sarah and Adam discuss a situation with Haddie. Meanwhile, Haddie, Amber and Max run into Alex. Crosby and Jasmine meet with her reverend for pre-marital counseling. Elsewhere, Drew meets his father, Seth, for breakfast.

Anna's latest gift to Earth is "Concordia" but she's really hiding an invasion fleet of breeding vessels. Eli sees "Concordia" as the perfect time to assassinate Anna and sets about convincing the Fifth Column to carry it out.

Neal's landlady June is visited by an old friend of her late husband. Byron's friend just got out of prison, but Neal suspects he hasn't given up his criminal path.

Fitch, Washington, Stone and Sanchez delve into the boxing world to investigate a woman's death. Her fiancé is preparing for a match against her ex-boyfriend and she was hiding a secret that could have thrown the fight.

Lights Leary and his wife Theresa, are once again at odds. She is concerned about their ever worsening financial situation. So his problems are familial, because Theresa is worried what he might do next.

Sixteen talented shooters from around the country begin to compete for the title and the $100,000 prize. There were three challenges. The first challenge determined the two team leaders. These people got to pick their own teammates.A team and an elimination challenge followed and they focused on the use of handguns.

Craig Ferguson, Kevin Hart, RED

Adam Sandler, Chris Colfer, Gang of Four

Javier Bardem, Paula Abdul, Merle Haggard

Emily Blunt, Dr. Kara Cooney

Janeece finds herself becoming caught up in a complicated mother-and-daughter struggle at the school. An attraction begins as Cesca teaches Jonah Spanish. Grantly's appearance causes attention among both the staff and pupils.