Kate and Jack in “Through the Looking Glass”

What happened? What'd he say?

It's not important right now. Just, get everything together...

Jack, your knuckles. Here

What happened?

He killed them. Bernard, Jin, Sayid, all three of them. He radioed the beach. And I let it happen. We can't tell Rose. Or Sun, not yet. We gotta keep moving, I promised Sayid that we would keep moving.

So why did you bring him back? Why didn't you just kill him?

Because I want him to see it. I want him to experience the moment that we get off this island, and I want him to know he failed. Then I'll kill him.