Michael: I have to get my son back.
Jack: We're going to help you do that, Michael.
Michael: It's got to be the way I said it, man. Just the five of us. Otherwise it won't work, it won't work.
Jack: I promise, we're going to figure that out.
Michael: No, I have already figured it out. It's got to be just the people who already know. You, me, Kate, Sawyer, Hurley, that's it. Anybody else... look, it puts them in more danger.