Sayid tells the others they have until sundown to leave

Sayid makes it back to the temple and walks right past Dogen to give the others Locke/Smokey's message. He tells them that Jacob is dead and they don't have to stay at the temple anymore, they're free. He says the man is leaving the island forever and if they want to go with him, they should leave the temple and join him and they have until sundown to decide. Cindy, who is holding Zach and Emma, asks what happens if they stay. Sayid says "You die." Dogen looks concerned, but remains silent.

The temple is revealed + meet Dogen & Lennon + Cindy returns

As the survivors are brought out from the pathway under the temple wall, we finally get our first look at the temple itself. It's a large, tiered structure shaped somewhat like a pyramid.

The "temple master" Dogen, his translator Lennon and Cindy Chandler, the flight attendant from Oceanic 815 emerge from the temple. This is the first time we've seen her on the island since the season 3 episode "The Brig" (check out screens here).

Dogen speaks Japanese, and asks the survivors who they are and Cindy steps up and identifies them as being on Oceanic 815. Dogen says to shoot them and Hurley pipes up and says that Jacob sent them and tells them that Jacob gave him the guitar case. Dogen opens it to reveal a wooden Ankh, a symbol the complete four toed statue of Taweret was holding (see screens here). Dogen bows to it and the breaks it in half, then pulling a list from the hollow chamber. He asks them all there names and then tells them to bring Sayid inside to the spring. Lennon says that the paper said that if Sayid dies, then they are all in trouble.

How many other names were on the paper, which appears to be blank in one shot?

Sayid helps Jack save Charlie's life on Oceanic 815

Back on Oceanic 815, Cindy puts the call out for a doctor and Jack (still sitting by Desmond), comes to the rescue. It turns out that Charlie has locked himself in the bathroom and is unconscious. Sayid appears and offers his help which involves kicking the door open.

As Cindy is getting a first aid kit, Sawyer stops her to ask what's going on and tosses one of his trademark nicknames, calling her Earhart (after pilot Ameilia Earhart who disappeared).

Sayid helps Jack try to resuscitate Charlie, but he's initially unsuccessful. Jack sticks two finers in Charlie's mouth and pulls out a baggie of heroin. Jack looks for a pen, but it turns out Kate stole his when she bumped into him. Charlie comes to and asks if he's alive, which Jack confirms. Charlie then repeats his infamous one word line from the pilot (which he says after they experience the monster for the first time), "Terrific."

Jack back on Oceanic 815 with Rose, Benard & Desmond?! + less booze + blood on his neck

We're back and "LA X" was a hell of an episode. We start with Jack, back on Oceanic 815. While many things are very similar, there are some distinct differences. When flight attendant Cindy Chandler gives Jack extra alcohol, this time he gets just one bottle instead of two.

Also, when the plane hits turbulence, Rose comforts Jack instead of the other way around. Jack is desperately gripping his armrest. During the entire scene, Jack seems shell-shocked, like he knows something is not right but he can't quite place it.

After the turbulence passes, we hear the familiar sound of Captain Seth Norris' voice. Jack gets up and goes to the restroom where he notices a spot of blood on his neck, which he wipes off.

And then the kicker. When Jack returns to his seat, he finds Mr. Desmond Hume sitting on the isle seat. Desmond is reading the book Haroun and the Sea of Stories by Salman Rushdie. Jack clearly has a memory of Desmond, but is it from the track years ago or from the island? In this reality, did Jack and Desmond ever meet at the track?

In the background of the scene, we can also see Jin, Sun, Locke and Frogurt.