Under The Dome episode guide

The Enemy Within Sign in to watch

The Enemy Within

Season 3 | Episode 13

Airdate: September 10, 2015

As the dome comes down, a final attempt is made to keep infected townspeople from impacting the outside world.

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Season 3 | Episode 12

Airdate: September 3, 2015

When the Dome’s calcification process accelerates, Chester’s Mill has 24 hours before the barrier’s breakdown will suffocate everyone inside. While the new deadline puts added pressure on Joe to bring the Dome down, Barbie and Julia race to save his child from The Kinship. Also, Big Jim tries to manage the increasingly volatile Hektor (Eriq La Salle), who is adamant that infected townspeople never escape the Dome.

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Love Is A Battlefield

Season 3 | Episode 11

Airdate: August 27, 2015

Members of The Resistance race to release their loved ones from Christine’s influence before she reaches her end game for the Dome. While Barbie risks everything in an attempt to free Eva from the Kinship, Big Jim and Julia are enlisted by Hektor, the head of Aktaion, to test a possible cure for infected townspeople. Also, Joe chooses to work with Christine after she shares some shocking information about the entity behind the Dome.

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Season 3 | Episode 10

Airdate: August 20, 2015

An unlikely alliance is formed, and Hunter receives files that reveal disturbing details about the infected townspeople.

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Plan B

Season 3 | Episode 9

Airdate: August 13, 2015

Julia and Big Jim come up with a life-or-death plan to end Christine's control over Chester's Mill. Meanwhile, Norrie and Joe try to understand the dome's agenda.

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Breaking Point

Season 3 | Episode 8

Airdate: August 6, 2015

Big Jim, Julia, Joe, Norrie and Hunter join together to form a resistance against Christine, who is mobilizing residents to work on a massive excavation project in the caves underneath the town. Meanwhile, Hunter uses his tech skills to contact the outside world.

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Season 3 | Episode 7

Airdate: July 30, 2015

As the world outside the Dome is rocked by a catastrophic meteor shower, unexpected alliances form inside the barrier. Eva tries to indoctrinate Barbie deeper into The Kinship and Big Jim and Julia turn to one another while isolated on Bird Island outside of town. Also, Joe is forced to accept help from Sam, the man who killed his sister.

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Season 3 | Episode 6

Airdate: July 23, 2015

Big Jim tries to manipulate fellow captive Christine into giving him information about the Dome's future plans. Meanwhile, the townspeople threaten Joe and Norrie for refusing to participate in the Kinship.

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Season 3 | Episode 5

Airdate: July 16, 2015

Big Jim and Julia form a tentative alliance to search for proof that will discredit Christine, which leads them to new information about the Dome’s capabilities. Meanwhile, when tensions run high in town and threaten Christine’s leadership, she puts a plan in play that has deadly consequences.

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The Kinship

Season 3 | Episode 4

Airdate: July 9, 2015

While Christine manipulates the townspeople, Big Jim and Julia learn of a new threat

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Season 3 | Episode 3

Airdate: July 2, 2015

Big Jim suspects new residents Eva and Christine of plotting against the town, while the other townspeople try to return to their lives.

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But I'm Not

Season 3 | Episode 2

As the Dome begins to reveal its ultimate agenda, the townspeople are forced to question what and whom they can trust as fresh threats appear, new residents emerge and surprising alliances form.

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Move On

Season 3 | Episode 1

The residents of Chester’s Mill appear both inside and outside the Dome following their mysterious encounter in the tunnels beneath the town. Emmy Award winner Marg Helgenberger guest stars as Christine Price, a Chester’s Mill resident with insight into the Dome’s origins. Eriq La Salle guest stars as Hektor Martin, the ruthless CEO of the energy company run by Barbie's father.

Go Now

Go Now

Season 2 | Episode 13

Airdate: September 22, 2014

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As the Dome collapses, Joe, Norrie, and Hunter find a way out. Meanwhile, Big Jim loses someone close to him and tries to make a deal with the Dome.



Season 2 | Episode 12

Airdate: September 15, 2014

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With the egg gone, the Dome starts contracting, threatening everyone within. Barbie contacts his father and demands the egg, revealing the presence of his half-sister. Meanwhile, Melanie's condition grows worse and Big Jim works with Pauline to create a new painting that will show them the way.

Black Ice

Black Ice

Season 2 | Episode 11

Airdate: September 8, 2014

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The temperatures inside the Dome plummet and Julia and Barbie go to save the food, while Big Jim looks for fuel to power the generator at the high school. Meanwhile, Melanie begins to suffer and Junior realizes that her health is tied to the egg.

The Fall

The Fall

Season 2 | Episode 10

Airdate: September 1, 2014

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Big Jim is reunited with the wife that he believes is dead, while Barbie and Julia are reunited and realize that the egg is missing. Meanwhile, Joe and Norrie meet Hunter and set out to find the egg, as the temperature beneath the Dome begins to drop.

The Red Door

The Red Door

Season 2 | Episode 9

Airdate: August 25, 2014

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The mercenaries capture Barbie and demand that he get the egg for them. Meanwhile, Sam, Pauline, and Lyle try to track down the red door from Pauline's visions, and Big Jim makes a deal with the mercenaries guarding the Dome.



Season 2 | Episode 8

Airdate: August 18, 2014

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Barbie makes contact with a mysterious hacker who knows that Barbie's father Don is playing a dangerous game. Meanwhile, new sheriff Big Jim suspects that someone is after him and enlists Junior and Rebecca to help him.

Going Home

Going Home

Season 2 | Episode 7

Airdate: August 11, 2014

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When Barbie tries to recover Sam's body, he is pulled into the chasm and finds himself outside the Dome. He sets out to find the one man who can help him get back into the Dome with Julia: his father, Don. Meanwhile, Julia tries to conceal that Barbie is apparently dead but Big Jim finds out and uses the information for his own purposes.

In The Dark

In The Dark

Season 2 | Episode 6

Airdate: August 4, 2014

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Barbie and Sam investigate the tunnel behind Melanie's locker at the school, but an explosion cuts them off from the others. A dust storm comes up and Julia must choose whether to help the town or try and rescue Barbie. Meanwhile, Joe and the other three hands recover the egg from the lake.



Season 2 | Episode 5

Airdate: July 28, 2014

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Julia takes over as the new leader of Chester's Mill, after the town becomes divided over Big Jim and Rebecca's population-control plan. Meanwhile, Joe and Norrie help Melanie search for clues about her identity at the dome wall.



Season 2 | Episode 4

Airdate: July 21, 2014

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As conditions in Chester’s Mill worsen, Big Jim and Rebecca consider resorting to the extreme measure of population control, which drives a wedge between Barbie and Julia. Meanwhile, clues to Melanie’s past and her connection to the Dome are revealed. Dwight Yoakam returns as Lyle, the town barber.

Force Majeure

Force Majeure

Season 2 | Episode 3

Airdate: July 14, 2014

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When tensions in Chester’s Mill continue to rise as resources dwindle, Big Jim holds a census in order to forecast how long the town can continue to exist under the dire conditions. Meanwhile, a rainstorm brings much-needed water until it changes to acid rain, threatening the lives of everyone it touches. Also, Rebecca and Lyle butt heads over the reasons for the dome’s existence. Dwight Yoakam guest stars as Lyle, the town barber.



Season 2 | Episode 2

Airdate: July 7, 2014

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Barbie risks his life to help Rebecca save the Chester’s Mill food supply when she discovers an infestation of butterfly eggs on the town’s crops. 

Heads Will Roll

Heads Will Roll

Season 2 | Episode 1

Airdate: June 30, 2014

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Barbie's fate lies in Big Jim’s hands, and the Dome presents a new threat when it becomes magnetized. Meanwhile, Julia seeks out the help of a stranger to save the life of a mysterious girl who may hold clues to origin of the Dome. The premiere episode was written by bestselling author and executive producer Stephen King, who also makes a cameo appearance, and was filmed on location in Wilmington, N.C. Eddie Cahill and Karla Crome join the cast as series regulars.

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