We learn about the existence of the Looking Glass - the destination of the cable Sayid found on the beach that day long ago. Mikhail describes it as an underwater beacon that helps the submarine find its way. But it, like all communications, has not worked since the Swan implosion.

Sayid and Kate see that the Flame is wired with C-4, and find Dharma procedural manuals in the basement.

Locke discovers that beating the computer at chess is not just possible, it is how you access various communications or emergency protocols featuring Dr. Chang. You can select a palette drop, station uplink, mailiand communication (can't - sat dish is down), sonar access (can't - currently inoperable). Has there been an incursion on this station by the Hostiles? If so, "Enter 77." Locke enters this, which we come to find out triggers the C-4, blowing the whole place up. Sayid already knows Locke doesn't want anyone to have any ways to communicate and get off the island, so he's not happy with Locke. Locke protests he was just doing what the computer/Chang told him to do. He didn't know it would blow up. But his lie is exposed when Sayid finds a block of C-4 in Locke's pack. He knew what entering the code would do, and before he did it, he went and took some of the explosive for himself (we find out later why).

Mikhail was tied up but he had a knife. He got loose, and captured Locke, as Sayid and Kate capture Klugh, leading to a stalemate outside. She undoes it by having the following conversation in Russian with Mikhail:

(Translation according to Lostpedia)
Klugh: Mikhail. Mikhail! You know what to do.
Mikhail: We still have another way.
Klugh: We cannot risk it. You know the conditions.
Mikhail: There is another way.
Klugh: They captured us. We will not let them get into the territory. You know what to do. That's an order.
Mikhail: We still have another way!
Klugh (in English): Just do it, Mikhail.
Mikhail: Forgive me. (shoots her)

Mikhail begs Sayid, who has him at gunpoint, to "Finish it! Kill me." Is this because he wants to die, or because he knows that it's his method of escape, since we know that he is one tough sucker to finish off. He has had his brain fried by the sonic fence to the point his ears bled, and he has been shot through with a harpoon, but he somehow keeps on chugging. He is the first Other to display a superhuman characteristic like this since Ethan and his super strength.

Mikhail admits to Sayid that his story about being in Dharma was a lie, "but everything else I told you was true," including the purge. "The purge, in which a group of scientists attacked your people?" asks Sayid. "Believe what you want, but that is what happened," says Mikhail. Dude, I don't think the Original Hostiles + Ben qualify as scientists. Do they?

Sayid wants Mikhail to take them to the barracks to find Jack, Alex (for Danielle), and a way home. But he doesn't really need him, as he found a map. So why keep Patchy alive? Danielle doesn't trust him and would prefer to kill him, especially because Mikhail promises to kill Sayid the moment he lets his guard down.

Hurley tells Sawyer he can call him Hugo if he wants. But Sawyer doesn't make the connection to what he found out about a guy named "Hugo" when he read everyone's messages in the bottle on the raft.

Claire's eyes open to see Charlie has left her an array of fruit and would like to take her on a picnic. He's decided to stop feeling depressed and "seize the day." This is great - get busy livin' and all - but it doesn't take much to send him into despair again once Desmond has another flash.

At the picnic site, Claire sees migratory birds flying overhead, and gets an idea to catch one, since they are tagged, and attach a note to it - a note which will be read when the bird lands in Australia or New Zealand or wherever. If this seems a little too smart of an idea for our Claire, it's because she used to while away the hours at her comatose mom's bedside watching nature programs. Desmond has another vision about Charlie that involved Claire's bird idea. So he asks Charlie to hunt with him instead, so that he won't fall into the surf and get his neck broken by being pounded into the rocks.