Jacob sends Hurley on a mission across the island, but Jack must accompany him. In Los Angeles, Jack’s difficult relationship with his son is revealed. Meanwhile, Jin discovers that Claire thinks the people at the temple stole her son.

Watch "Season 6 Episode 5 “Lighthouse”"

Hurley must convince Jack to accompany him on an unspecified mission, and Jin stumbles across an old friend.

Watch "Season 6 Episode 4 : “The Substitute”"

Sayid miraculously comes back to life, but his problems have only just begun. Sawyer escapes, and Kate and Jin go after him. Back in Los Angeles, fugitive Kate helps Claire as she goes into labor.

Watch "Season 6 Episode 3 : “What Kate Does”"

The original survivors encounter difficulties as they arrive in Los Angeles, while on the island they are captured as they bring Sayid to the temple. Meanwhile, the “New Locke” prepares to meet with Alpert after Ben kills Jacob for him.

Watch "SEASON 6 EPISODE 2 : “LA X PART 2″"

Flight 815 is shown successfully landing in Los Angeles with no crash on the island, but the survivors are simultaneously shown still on the island after Juliet detonates the bomb.

Watch "SEASON 6 EPISODE 1 : “LA X PART 1″"

Jack and Sayid’s plan faces resistance from Sawyer, Juliet, and Kate. Ben and The Others/Hostiles reach Jacob at the Foot of the Statue, and are soon met by the 316 survivors, who reveal the contents of their mysterious package.

Watch "Season 5 Episode 16&17 ‘The Incident’"

Jack attempts to follow through with Daniel Faraday’s plan to detonate the hydrogen bomb after Faraday is killed, Locke instructs Alpert to take him to Jacob, and Sawyer is interrogated about an incriminating surveillance video.

Watch "Season 5 Episode 15 : ‘Follow The Leader’"

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.

Watch "Season 5 Episode 14 : ‘The Variable’"

Watch "Season 5 Episode 14 : ‘The Variable’ Trailer"

Watch "Season 5 Episode 13 : ‘Some Like It Hoth’"

Watch "Season 5 Episode 13 : ‘Some Like it Hoth’ Trailer"

Ben and Locke return to the island, where Ben says he is going to summon the Smoke “monster” and atone for his daughter’s death. In addition, the falling-out on the island between Ben and Charles Widmore is revealed.

Watch "Season 5 Episode 12 : ‘Dead Is Dead’"