After Julia frees him from the Kinship's influence, Barbie goes back to town hall to find out what Christine and the others are up to. Meanwhile, Hektor rescues Big Jim, Norrie, and Hunter from the attacking Millers, and they take refuge at another of Big Jim's safehouses.moreless
Big Jim and Julia target Barbie and Eva to break Christine's grip on the Kinship. Meanwhile, Hunter finds information on Hektor Martin, the head of Aktaion.
The team attempt to destroy Drill once and for all using the knowledge that they've gained. However, if they fail, Drill's retribution will be swift and terrible.
Julia and Big Jim go to blow up the cave when they learn that the crystals are the key to Christine's plan. Meanwhile, Norrie and Joe try to free Carolyn from the Kinship's influence, and Barbie and Eva bond.moreless
Claire and the others attempt to keep Thomas Harcourt alive, in the hopes that he can provide information on Drill's ultimate goals. However, Drill sets a new plan in motion to kill his former "friend."moreless
As meteors rain down outside of the dome, Eva attempts to convince Barbie to join the Kinship. Meanwhile, Julia and Big Jim share a drink, and Norrie and Joe discover a way to break the townspeople free of Christine's control.moreless
While Marston forces Big Jim to try to find out what Christine has planned, Carolyn recruits Norrie to x-ray Hunter while Junior forces Joe to work for the Kinship.
When it becomes clear that Drill wasn't destroyed along with the rock, Claire and Sean seek out a man who underwent the same experience as Sean 30 years ago.
While Big Jim and Julia join forces against Aktaion and Christine, Christine plots to convert or eliminate those who resist her and her alien influence.
Sean has no choice but to help the government find a way to stop Drill, but asks for a night alone with his family first. Meanwhile, Lean continues communicating with Drill through Minx, and Frommer orders Jessup to take Henry into custody.moreless
While Christine manipulates the townspeople, Big Jim and Julia learn of a new threat.
After bringing together Drill's "friends," Claire and the FBI learn more about Drill. Meanwhile, Wes brings the recovered object back from Mali and Sean warns that it's calling to him.
Big Jim suspects new residents Eva and Christine of plotting against the town, while the other townspeople try to return to their lives.
While Claire meets with Sean, Wes finds a clue that leads him back to Mali... unaware that it's a trap set by Drill. Meanwhile, Lena grows increasingly nervous watching Minx for any signs that Drill is talking to her again.moreless
Claire and Wes learn where Sean is heading, and try to stop him from setting off a nuclear meltdown. Meanwhile, Minx meets Henry for the first time and gives him instructions for Drill's game.moreless
Sean takes Maria hostage, while Claire and Wes discover what Drill's next target is.
While Drill continues manipulating the children, Claire and Jessup discover that Sean was at the hospital... and is the man in Ms. Bellings' sketch. Meanwhile, the FBI trace the computer breach to Wes' home computer, and Maria receives an unexpected visitor.moreless
FBI Agent Claire Bennigan investigates a six-year-girl who attempted to murder her mother, and soon comes to believe that a mysterious person named Drill is manipulating children into killing their parents. Meanwhile, Defense Department agent Wes Lawrence is summoned to the Sahara Desert to investigate a bizarre fulgurite structure holding a missing F-22 that disappeared 4,000 miles away.moreless
The group copes with the death of one of their own, Nurse Jackson and Dr. Naday take things their relationship to a new level and Dash’s new love interest causes problems.
Kara and Emma make progress in their relationships with their mothers. Meanwhile, when Dash and Mae sneak off to be together, Kenji and Brittany catch them and resort to hiring security guards to keep them apart.moreless
When Emma unexpectedly returns, Leo finds himself feeling guilty about their fight and his betrayal of their relationship. Hunter gets some bad news about his health and other relationships change in one direction or another.moreless
Emma goes home but learns a shocking secret; Jordi mulls breaking the law as a means to an end; Leo and Kara leave the hospital; Hunter gets support from Dash as he faces a risky medical procedure; Nurse Jackson and Dr. Naday try to get a response from Charlie.moreless
A pop star checks in to the hospital, but it upsets the status quo. Meanwhile, love is all around as Kara and Hunter's relationship intensifies; Dr. McAndrew hopes to rekindle his romance with Dr. Grace; Emma and Leo start to reconnect.moreless
A new doctor arrives at Ocean Park after being recommended by Nurse Jackson, but she starts having second thoughts about her decision after observing his methods. Meanwhile, Emma, Dash and Jordi go in search of the ideal gift for the newly awakened Charlie and Kara learns the truth about Hunter.moreless
Nurse Jackson, whose actions have caught up with her, finds support from Kara, Hunter, Jordi and Dash. Meanwhile, Emma meets Leo's friends from home, and one of the kids' circumstances changes dramatically. Nurse Jackson (while on suspension), decides to do what she did before nursing, SINGING!moreless
Leo abandons Emma and Jordi tries to fill the vacancy. Meanwhile, a new patient shocks Kara; Nurse Jackson is desperate to keep Charlie at Ocean Park to the point of crossing a line, a position shared by Dr. McAndrew's ex, Dr. Erin Grace, who is returning after a one year sabbatical. Leo and Jordi fight over Emma.moreless