The crew faces a new foe targeting Rachel and her research, leading Chandler to engage in a series of dangerous strategic maneuvers.

Chandler’s leadership is put to the test when the ship’s propulsion system is in danger of breaking down, the crew becomes overworked and exhausted, and Dr. Scott could potentially lose…

Rachel and Chandler ask for six volunteers to participate in human trials of her vaccine, but the tests could be a living hell as the virus and the vaccine do…

With their mission now fully dedicated to spreading the cure, Nathan James puts a call out to civilians to meet at pre-selected ports across the country.

After the horrifying revelations and reversals of fortune in Baltimore, Chandler and his fractured team join forces with an underground resistance in an attempt to defeat Amy Granderson. With doses…

After the horrifying revelations and reversals of fortune in Baltimore, Chandler and his fractured team join forces with an underground resistance in an attempt to defeat Amy Granderson. With doses…

With a small group of survivors from Solace in tow, Chandler and his crew square off against an enemy of the most dangerous kind – a nuclear-powered submarine led by…

Barbie turns to his father for help contacting Julia but realizes that he may not be trustworthy; Big Jim declares himself sheriff of Chester’s Mill.

Rebecca and Sam try to save Chester’s Mill residents as temperatures plunge; Barbie puts his life at risk to help Julia after a terrible accident.

Just as the walls start to close in on those trapped in Chester’s Mill, a possible exit from the dome is revealed.

Barbie’s life is in Big Jim’s hands; the dome becomes magnetized; Julia tries to save the life of a mysterious girl who may have clues about the origin of the…

A cave-in severs Barbie and Sam’s path back to Chester’s Mill during their investigation of a mysterious tunnel; a dust storm rages through the town, as Big Jim and Julia…

The Chester’s Mill residents receive an unexpected visit from their loved ones on the other side. Meanwhile, the community braces for a threat from outside the Dome.

Junior stands up to his father and is shattered when he discovers the truth about his mother’s past. Meanwhile, Julia learns firsthand the powers of the “mini dome.”

Secrets of the Dome are revealed and Big Jim is determined to put an end to Barbie once and for all. Meanwhile, Junior, Angie, Joe and Norrie discover who the…

Following Duke’s death, his house catches fire, forcing the town to rally together to form a bucket brigade. Elsewhere, Junior ambushes Barbie, while Dodee and Phil pick up a military…

An old foe comes back into the picture. Gilly meets Sam’s family. Arya faces a difficult choice. Jaime faces off against the High Sparrow.

Tyrion seeks a strange ally. Bran learns a great deal. Brienne goes on a mission. Arya is given a chance to prove herself.

Billy represents a woman in an annulment action case, who’s deeply religious husband wants out of the marriage due to the fact that she has surgically modified her body. Meanwhile,…

Larry’s ex-wife asks him for his permission to take their son to Canada, where she is moving. They argue over why can’t one of them move closer to the other…

Libby lends a helping hand to Hurley to support him when he begins to think the island is having a strange effect on him. Hurley begins to see Dave (guest-star…

After discovering something odd just offshore, Jack and Sayid come up with a plan to confront “The Others” and hopefully get Walt back. At the same time there will be…

After discovering something odd just offshore, Jack and Sayid come up with a plan to confront “The Others” and hopefully get Walt back. Meanwhile, Eko and Locke come to blows…

Jack, Locke and Kate explore the mysterious hatch but Jack decides to wait before going down into the hatch. Kate and Locke aren’t so patient. When Shannon chases after Vincent…

Jack, Locke and Kate learn more secrets about the hatch. Meanwhile, after being beaten and taken captive, Sawyer, Michael and Jin wonder if their captors are fellow survivors or the…

When Charlie’s vividly surreal dreams lead him to believe Claire’s baby, Aaron, is in danger, Locke suspects Charlie may be using again. Meanwhile, Sawyer encourages Hurley to act on his…

A mysterious illness that baby Aaron suddenly contracts sends a desperate Claire, Kate and French woman Danielle to return to the same area where Claire was initially kidnapped. It is…

The celebration of Jack’s return is cut short when he arrives at the beach with an Other, Juliet, whose flashbacks pick up from where they left off, showing us how…

A somnolent visit with the ghosts of Christmas past lands Tony back on Melfi’s couch. With the annual pork-store holiday party approaching, Bacala reluctantly agrees to don the Santa suit…

The season 3 finale finds the castaways preparing for an invasion by the slightly less mysterious Others, while Charlie and Desmond find more than they were looking for in the…

The season 3 finale finds the castaways preparing for an invasion by the slightly less mysterious Others, while Charlie and Desmond find more than they were looking for in the…

A delirious Eko wrestles with past demons; some of the castaways go to the Pearl station to find a computer they can use to locate Jack, Kate and Sawyer; Jack…

After Desmond rescues Claire from drowning, Charlie gets Hurley to help him find out why Desmond has seemed able to predict the future. Desmond recalls exactly what took place in…

Bobby ‘Bacala’ Baccilieri Sr. comes out of retirement to deal with a young hothead named Mustang Sally–much to the chagrin of his son and Uncle Junior.

When Kate and Locke arrive at the Others’ camp, Ben promises to tell Locke the island’s secrets as long as he stops his destructive plan, and Kate’s reunion with Jack…

Jack, Kate, and Sawyer are prisoners of the mysterious “Others.” After their captors drug them and take blood samples, they are held in separate areas. The camp leaders–Ben (Henry Gale),…

While the gang begins to turn on itself, Tony finds himself at the threshold.

After the remaining survivors are reunited, Sawyer and Jack hatch a plan to divert the Man in Black’s attention and leave the island without him on Widmore’s submarine, but disastrous…

For different reasons, Jack and the Man in Black both use Desmond to extinguish the light at the heart of the island. The island starts disintegrating, but The Man in…

On Jacob’s orders, Hurley leads Jack to a lighthouse. Meanwhile, Claire questions an Other she has captured while tending to an injured Jin. In the flash sideways, Jack is a…