The 25 best LOST episodes

Jack and the survivors wait for Charlie to turn off The Others' signal-jamming device, not knowing that he has been captured at the Looking Glass station.

After discovering a sailboat just offshore containing Desmond, Jack and Sayid come up with a plan to confront "The Others". Eko and Locke come to blows as Locke makes a potentially cataclysmic decision regarding the "button".

During the helicopter ride to the ship, Desmond's consciousness begins jumping back and forth between present day 2004 and 1996. He is forced to find Daniel Faraday in 1996 in order to get answers and stop the jumps.

The mysteries behind Richard Alpert's arrival to the island, his immortality, and his alliance with Jacob are revealed--plus more details about the purpose of the island and the relationship between Jacob and the smoke monster.

One of the castaways is chosen to descend into the mysterious hatch, and Shannon stumbles upon a shockingly familiar face in the jungle.

As Ben takes Locke to see Jacob and reveal the island's secrets, Ben's background on the island is exposed--as well as what happened to the Dharma Initiative.

The team from the ship attacks Locke's camp looking for Ben, with Alex as a hostage. The doctor from the ship washes up on shore at Jack's camp and Faraday provides some distressing news.

The castaways on the raft are surprised at sea by something unexpected. Meanwhile, remaining islanders attempt to blow open the hatch, and a visitor to the encampment might be a threat to Claire's infant son.

Locke thinks he knows how to get the hatch open, and he and Boone venture inland. Jack is reluctant to help Sawyer get glasses.

At the site of the ancient statue remains, Locke assigns Ben a difficult task that involves Jacob's fate. Jack is determined to go ahead with Faraday's plan.

When the survivors run out of food, Locke, Kate, and Michael go out hunting for boar. Michael gets injured, so he and Kate go back. But Locke stays out hunting, and ends up running into the creature living in the jungle.

John Locke, now alive again and back on the island after the second plane crash, flashes back to his return to civilization, where he is brought in by Charles Widmore and asked to convince the Oceanic 6 to return to the island.

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 dreaded "Others."

Forty-eight survivors of an airline flight originating from Australia, bound for the U.S., which crash-lands onto an unknown island 1000 miles off course, struggle to figure out a way to survive while trying to find a way to be rescued.

With Jack's help, Locke rescues the candidates from Widmore's compound, but their plans for leaving the island are forced to change. In Los Angeles, Jack tries to convince Locke to try an experimental surgery for his paralysis.

After Desmond saves Claire from drowning, Charlie and Hurley suspect that he can see the future, so they come up with a plan to get some answers out of him.

When the hatch suddenly takes on a life of its own, Locke is trapped and is forced to enlist the help of an unlikely ally. Jack faces off against Sawyer in a series of poker games for supplies. The truth about Henry is revealed.

Jack and Sayid's plan faces resistance from Sawyer, Juliet, and Kate. Locke, Richard, Ben, and The Others reach Jacob at the Foot of the Statue.

In the season finale, the Oceanic Six find themselves closer to rescue.

In order to avoid being killed, Ben promises to offer proof to Sun that Jin is still alive. On the island, Jin meets up with the survivors as Locke reaches The Orchid and fulfills his mission.

Faraday returns to the island and tells Jack that his mother, Eloise Hawking, lied to them--they don't belong on the island. He then initiates a dangerous plan to get them back home.

Claire goes into labor while a helpless Charlie goes into panic mode. Meanwhile Locke is missing, Jack tends to a wounded Boone and Sayid presents Shannon with a romantic surprise.

When Hurley becomes obsessed with the French woman and heads into the jungle to find her, Jack, Sayid and Charlie have no choice but to follow. Meanwhile, Locke asks Claire to help build a mysterious item.

Charles Widmore brings Desmond back to the island so that he can conduct a dangerous electromagnetic experiment, which sends him back to the alternate reality in Los Angeles, a reality where he has never met Penny.

The Man in Black searches for Desmond to achieve his goal of destroying the island. Jack, the newly-appointed "protector" of the island, sets out to stop him. In Los Angeles, the survivors reunite and recall their island experiences.