In Noyo County, Washington, Peter stumbles across a grisly murder with ties to Newton and First Wave. He is forced to team up with a suspicious sheriff to get to the heart of the case. Meanwhile, Walter has trouble functioning without Peter, and worries he will be sent back to the mental institute.
Patrick Jane and the CBI team investigate the death of a mathematical genius by a gun-wielding clown.
Isobel returns to town and stuns Alaric with her attitude and her demands that he arrange a meeting with Elena. When mother and daughter finally meet, Isobel refuses to answer most of Elena’s questions, but reveals that she will stop at nothing to find the mysterious invention Johnathan Gilbert has been searching for. Isobel’s dangerous actions lead Stefan, Damon and Bonnie to step in and help Elena deal with the situation.
The first prize of priority registration engulfs Greendale Community College in a Spring Fling paintball war.
Michael suspects Donna is cheating on him and puts P.I. Dwight Schrute on the case. Meanwhile, Andy is frustrated when no one takes his customer's complaint seriously.
Bailey preps the team with mandatory sensitivity training prior to admitting a 700-pound patient with compounded medical issues, and the case proves to be challenging in every sense of the word. Meanwhile Derek has to come face to face with a former patient's husband in a wrongful death deposition, and spending time with a heart patient's daughter opens up some old wounds for Cristina.
Jules and Grayson consider the notion of FWB, friends with benefits. Meanwhile Andy hires a nanny for Ellie, and Travis benefits from Bobby's unconventional plans to make some extra cash
When a slab of concrete starts bleeding in midtown, the CSIs' investigation takes them into the underground world of hardcore fighting, where men moonlight as 'weekend warriors' for the pleasure of a live viewing audience.
When a pregnant woman is raped, Detectives Olivia Benson and Eliot Stabler arrive at the hospital to find that she has fled. Even when someone is arrested for a similar offense, ADA Jo Marlowe says she doesn't have a case in court unless they find the victim and get a statement from her. Soon, Benson and Stabler connect the woman to an illegal adoption operation, forcing them to go undercover and expose the truth.
After locating the terrorist safe house Katie is being held in, Porter is also taken prisoner, and Hugh Collinson and a team at Section 20 have to act quickly before it is too late.
In response to fan criticism, Kari, Grant and Tory retest "Knock Your Socks Off," while Jamie and Adam take on "Compact Compact"... again.
U.S. Marshal Mary Shannon must hunt down witnesses for federal cases in the witness protection program while also managing a rather dysfunctional family and her own personal life.
A divorced mom tries to keep pace with everyone around her.
Timothy and his wife embark on a sea-going journey along Britain's coast, encountering local characters and experiencing the daily life at sea as they navigate through ports.
At Padua High, newcomers Kat and Bianca Stratford attempt to navigate the popular crowd.
Mother's Day for Frankie is anything but serene when she finds herself doing more for Mike and the kids and less for herself. But she learns that the apple doesn't fall far from the tree when she escapes the family for a few hours to go to her mom's (Marsha Mason, "The Goodbye Girl," "Chapter Two") and ends up acting like a child by making her mom wait on her hand-and-foot. Meanwhile, Sue feels guilty when she steals a motivational magnet from a store whose message actually enticed her to shoplift it.
The BAU team must profile a serial killer covered in tattoos who commits suicide, but leaves clues to the whereabouts of his last victim.
For Jay's birthday, Gloria gives him the best surprise -- a romantic birthday getaway to Hawaii -- the only kicker is she invited the whole entire family to come along. Everyone arrives at the airport, and it's a maddening scene with forgotten I.D.'s, security breaches and flying phobias.