A death row inmate's final request brings Dr. Hawkes to a Pennsylvania prison and face-to-face with a tragic incident that he has kept secret for many years, just as a prison riot erupts and traps Hawkes inside.
The night time peace of Badger's Drift is shattered horribly when teacher Connie Bishop screams in fright, convinced there is an intruder. Days later a local councillor, said to be obsessed with her, is found murdered in her garden. Is Connie the innocent victim she seems? Barnaby and Jones uncover jealous rivals, ruthless social climbers and a cottage with mysterious secrets as they search for the killer.
The girls sit their final school exams and have to avoid a water attack in public when the full moon rises early. They confront the water force in the Moon Pool and are given a message about Mako Island.
The girls discover the Mako crystals contain immense energy and need to mount a rescue mission when Zane jealously steals one in an effort to gain Rikki‟s attention.
Zane installs Sophie as head of staff at the cafe. Bella develops a sneezing allergy that also accidentally triggers her powers. Sophie seizes on the problem and looks to fire Bella and the band.
Will competes in the Free-Diving Championships but afterward chooses to break from the sport and shrug off Sophie's influence on his life. Rikki sees Sophie kissing Zane at the event and breaks off their relationship.
Kelly takes guardianship of her 15 year-old half sister Tonya who is homeless and needs help to get her baby boy out of care. In a meeting with Tonya's social worker Julie, it's agreed that custody will only be considered if Tonya proves she is responsible by looking after a simulation baby. But it's not long before the unruly teen leaves Micky holding the plastic baby, forcing him to make a painful decision. Elsewhere, Libby witnesses the results of an apparent miracle from a visit to a French grotto and organises a pilgrimage for Patty. Petrified and elated at the thought of liberation from her mother, she persuades Frank to escort Patty while she waits anxiously at home. The unlikely travelling companions end up sharing a room in a convent where Frank becomes the improbable focus of attention.
Naomi’s little white lie has become the talk of the school, and when she is forced to testify in front of the school board, she drops a bomb that no one saw coming. Annie is finally able to put her relationship with Jasper behind her, but when she and Silver inadvertently drive past the scene of her hit-and-run, the guilt comes rushing back to haunt her. Dixon and Ivy’s fake-dating situation continues and the two make a decision that neither one anticipated. Adrianna and Navid share a friendly conversation which doesn’t go over well with their significant others, Gia and Lila. An argument between Gia and Adrianna results in Adrianna walking in on Gia and her ex-girlfriend. Liam receives a surprise visit from his father, Finn, just released from prison. Though Ivy has warned Ryan that her mother is trouble, he continues to date Laurel.
Milli, Geo, and Bot can’t wait to meet their friend Ethan at “The Wild West Toy Train Show,” but before they hop in the Umi Car for their outing, the Umi Alarm sounds. A big gust of wind has blown Ethan’s ticket out of his hands all the way up to the top of Wild West Mountain! Poor Ethan can’t get into the Train Show without his ticket, so using their mighty math powers, the Team scales the mountain, rescues the ticket and returns it safely to Ethan.
In order to prevent more loss of life, Hurley leads the other survivors to speak with the Man in Black. In the flash sideways, Hurley meets Libby, while Desmond continues his mission to let the Oceanic 815 passengers know of their lives on the island.
Raylan's father is arrested in the wake of a confrontation with the tenant of a house he and Raylan's stepmother own.
Workers laboring to build a bridge across the Don River make a grisly discovery – entombed in the swamplands bordering the river are the well-preserved bodies of a man and a woman. Called to the scene, Murdoch and Ogden quickly determine that the couple was murdered. When a third body is then discovered, Murdoch has to re-evaluate the nature of the crime.
Fresh off their monumental win at Sectionals, New Directions is on top of the world. With an extra spring in their step, they get to work on new numbers for regionals. But when Rachel and Finn’s budding romance hits a bump in the road after she becomes involved with a competitor, Jesse St. James, it threatens to derail the entire club. Mr. Schuester pays a visit to Shelby Corcoran, coach of Vocal Adrenaline, to confirm Jesse’s motives. Meanwhile, Will is newly single, but is he ready to take his relationship with Emma to the next level? And to top it all off, Sue Sylvester returns from her condo in Boca with a renewed focus on destroying Will and disbanding the glee club.
The murder of an NYPD detective brings Nichols and Stevens to a sleepy seaside town, ruled by one of Nichols’ old foes – an Irish mob boss with a reputation for eluding justice.
Sarah and Amber are both attracted to Amber's teacher, while Crosby tries to have a romantic moment with Valerie, but because he can't leave Jabbar alone too long the moment doesn't turn out that well. Meanwhile Julia thinks about doing pro bono work, but she's sure that her boss will not approve it. While Adam really needs a break from everyone.
Erica, Ryan and Jack go on a harrowing mission to find the legendary John May in order to rescue Georgie. Anna brings Chad aboard the Mothership for a story on her Live Aboard Program and Tyler confronts his mom about his mysterious past.
Harry loses his cool with 3 swimmers that he's forced to rescue just seconds after warning them not to swim in a dangerous area. However, calling them "imbeciles" and "idiots" puts him in hot water.
At Padua High, newcomers Kat and Bianca Stratford attempt to navigate the popular crowd.