The BAU team is tracking down a family annihilator, but needs to take a break from the case to get advice from "The Fox", who is an horrific killer from the team's past. "The Fox" surprises the team with a ominous message for Agent Hotchner.
With a history of giving bad gifts, Claire is determined to surprise Phil with an amazing anniversary present: a private performance by one of their favorite musicians, Izzy LaFontaine. However, it turns out to be unexpected in more ways than one. Meanwhile, Mitchell and Cameron call up their "party-girl bestie", Sal, for a long overdue night out on the town.
Things at the water park are not what they seem. The boys' fun filled day is about to turn deadly. Events are in play at Splash Town that signal the end of the world is upon us. Cartman tries to warn everyone but no one will listen. Disaster is about to strike and the boys are in a race to survive.
Frankie accidentally hits Brick in the head with a beer bottle when trying to get the trash out before the garbage truck leaves. But when Brick innocently tells his school that the scratch was caused by his mother throwing a beer bottle at him, a social worker comes to evaluate the Heck family. Meanwhile, Bob helps Mr. Ehlert shoot a commercial for the car lot.
To test a new Ryker's security cell, Spider-Man volunteers to try to escape. But the Green Goblin traps him inside amid a sea of felons he put away.
When Peter breaks up with Liz to be with Gwen, nothing goes as planned. Likewise for Spider-Man, who finally unmasks the Green Goblin.
Homecoming at the newly-reopened school prompts Coach to investigate East Dillon's history. Tami feels the wrath of the boosters. Landry and Vince both like Jess. Julie accompanies Devin to a gay bar. Matt and Tim go hunting.
When a newly married Erica threatens to take custody of Annie and Connor, Sean and Julia present a happy and united front to thwart her efforts. Christian bonds with a new patient as Mike reveals his future plans with Kimber.
Rescuers have to look to the past to solve the riddle of Flight 611, a China Airlines 747 that disappeared 20 minutes after taking off.
The shooting of Inspector Patricia Wright’s brother unites the team at Major Crime. Can they bring the killers to justice? While the detectives gather together to help their boss, a respected transplant surgeon is murdered. Malik’s wife, fed up with his obsession with work, leaves with their children.
Annie leaves Debbie and Harry surprised when she informs them that she would like to invite Jasper over for dinner. Dixon decides to pass on the event as a result of his anger over Debbie's management of the Sasha situation. Meanwhile, Kelly shows support for Silver regarding the caring of Jackie despite the fact that she does not yet know if she can ultimately forgive her mother for all the pain she has caused in the past. Navid confronts Adrianna about her drug use, and a weekend camping trip leads to Ryan and Jen's relationship climbing to a new level. Also, Naomi is caught kissing Jamie by Richard and his mother, forcing her to come clean about her plans for CU admission.
While on a lunch date, Kristin and Brody recall the crazy times they used to have together. After Brody toasts to having a nice lunch without fighting, Kristin mentions that Jayde wants to talk with her. Brody tells Kristin she's out of her mind ...
Chad reports from the Peace Ambassador Center as 100 diplomatic visas are being issued to the first wave of American Visitors, with Anna getting the first, but not everyone agrees with the decision. Erica has been tasked to protect the Vs and is tracking a death threat while paired with a V officer. Meanwhile, Ryan starts reaching out to his old friends to build up opposition forces and help fight the Vs.
Later, Six's rebellions are no longer tolerated and he is sentenced to execution. Two suffers a personal loss and the truth will out.
Six is seeing double when an evil version of himself launches an assassination attempt on Two. 313 struggles with her inner demons and 11-12 seeks answers to his personal dilemma.
Former detective Alex Donovan leads a team of volunteers known as The Forgotten Network, a dedicated group of amateur sleuths that takes on murder cases after the police have reached a dead end and even unable to identify the deceased.
While Opie seeks both revenge and reconciliation, Chibs makes a secret deal with Agent Stahl (Ally Walker) to protect his wife and daughter.
Nathan has decided he has no possible job options left. But in a way he feels liberated – he’s free to consider impossible options. The world opens up to him again – he’ll become an event manager, or a personal trainer! Sammy is trying to be supportive but it’s wearing her out. Determined to do something useful, Nathan secretly tracks down an address for Dave’s father, Tom Jenkins, and drives into the country to suss him out. He meets his cousin, Coby, who seems to be a rough-head compo cheat. He also learns that his grandfather Tom is a notorious local crook, doing time in jail for car rebirthing. Nathan is rocked by the murky gene pool they all share. Is it any wonder his life seems to be falling to pieces? Julie is still effectively confined to bed, and Rachel is feeling the pressure organising a baby shower that will be fun for Julie and her friends. To complicate matters Chrissy texts to warn she won’t be coming, but sends her love. Rachel can’t understand how Julie’s best friend can miss the party. Julie is clearly hurt, but makes excuses for Chrissy, knowing the real reason she’s kept away. Warney is in a funk over Trish and is worse company than usual. Ben and Melissa want him out. Carbo appeals to Sammy – is there any chance she can help get Warney and Trish back together? Sammy can’t think of anything worse, except perhaps the relationship her mother is in now, with her aging rich boss, Andrew Malouf.
While Hetty is attending a Senate hearing in D.C., the investigation of a murdered Marine Lance Corporal leads the NCIS team to stolen anti-tank missiles and a dangerous militia group.
While Alicia is preparing in a case defending a scientist accused of arson, she is suddenly asked to testify on Peter's behalf. Damages Peter Riegert guest stars as the judge in Peter's case and CBS' The Early Show star Russ Mitchell guests as himself and interviews Peter.