J.D. must keep a secret when Carla’s “what-if” guy asks her out on a date. Meanwhile, on the other side of the argument, Carla hounds Turk for checking out other…

A 12-year-old boy believes he’s cursed after a Ouija board tells him he’s going to die. His father, a major financial supporter of the hospital, makes escalating demands of House…

Jack, Sawyer, Kate, Miles and Hurley, struggling to save Sayid, face an ancient secret. Meanwhile, a fake Lock exits the chamber to everyone’s awe.

A parallel universe, in which the crash never happened, is revealed as an aftermath of the bomb’s detonation. Meanwhile, Sawyer blames Jack for the loss of Juliet and the true…

Jack’s decision to put a plan in action in order to set things right on the island is met with some strong resistance by those close to him, and Locke…

Jack’s decision to put a plan in action in order to set things right on the island is met with some strong resistance by those close to him, and Locke…

Jack and Kate find themselves at odds over the direction to take to save their fellow island survivors, Locke further solidifies his stance as leader of “The Others,” and Sawyer…

On the 100th episode milestone for the series, the time of reckoning has begun when Daniel Faraday comes clean regarding what he knows about the island.

To atone for sins of the past, Ben must attempt to summon the smoke monster in order to be judged.

Kate goes to extreme measures to save Ben’s life when Jack refuses to help. Meanwhile, Kate begins to tell the truth about the lie in order to protect Aaron.

Sawyer perpetuates a lie with some of the other island survivors in order to protect themselves from mistakes of the past.

Desmond looks for a woman who might be the key to helping Faraday stop the island’s unpredictable movements through time; Locke finds out who has been attacking the survivors.

The remaining island survivors start to feel the effects of the aftermath of moving the island, and Jack and Ben begin their quest to reunite the Oceanic 6 in order…

As the face-off between the survivors and the freighter people continues, the Oceanic Six find themselves closer to rescue.

The face-off between the survivors and the freighter people continues, and the Oceanic Six find themselves closer to rescue.

Sayid goes back to the island to bring the rest of the people to the freighter. Ben, Locke, and Hurley go to another Dharma station in order to “move the…

Locke finds out where Jacob’s cabin is. Life on the freighter becomes dangerous.

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…

While Jack devises a plan to do away with “The Others” once and for all, Sayid uncovers a flaw in “The Others’” system that could lead to everyone’s rescue. But…

Ben unwillingly divulges information to Locke about the island, taking him on a journey to various locations including strange monuments and the mysterious Jacob. Back at the beach, Juliet’s secret…

After abandoning the Others, Locke takes Sawyer on a trek through the jungle to help him eliminate a common enemy. Meanwhile, back at the beach, the parachutist Naomi has crucial…

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…

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 has the Others in a desperate situation as he holds Ben’s life in his hands. Meanwhile, Kate and Sawyer try to escape from their captors. Flashbacks reveal Juliet’s past…