Operation: Sleeper is the fifth mobisode of Lost: Missing Pieces, and the fifth mobisode overall.
At night at the beach camp, Juliet Burke wakes Jack Shephard up inside his tent. She confesses to Jack that she's there because she's still working for Benjamin Linus. He wants her to find out which of the survivor's women were pregnant so they can be taken. Jack can't believe what she's saying, that he saw how bad she wanted to get on that submarine. But Juliet reminds him that neither of them got on it and that she was naive enough to think Ben would let them go. Jack points out that John Locke blew up the submarine, not Ben, but Juliet has her doubts that Ben wasn't involved. Juliet only came with Jack because Ben sent her, but now she's telling Jack because she saw Sun-Hwa Kwon's baby growing inside her. If she's still on the island in about a month, both of them will be dead.
Juliet: It’s okay.
Jack: What happened?
Juliet: We need to talk, Jack.
Juliet: Ever since I got here, the people in your camp... Sayid, Sawyer, they don’t trust me. They think that I am here to hurt them and it’s only a matter of time before they figure out-
Jack: Juliet, I’m not going to let anything happen to you.
Juliet: Thank you. Please let me finish. It’s only a matter of time before they figure out that they’re right.
Juliet: They shouldn’t trust me. I’m still working for him... for Ben. He sent me here to study the women to find out which ones were pregnant.
Juliet: So we can take them. He promised me no one would get hurt.
Jack: He promised you?
Juliet: Listen, Jack.
Jack: How could you? I - I thought that you were one of us. I saw it. You wanted to get on that submarine as bad as I did.
Juliet: But I didn’t get on it. And neither did you. Just... I guess I thought that it was actually going to happen; that we would get off this island. I was... I was naive to think that he would let us.
Jack: Let us? Ben was in a wheelchair. Locke blew up that submarine.
Juliet: Did he?
Jack: So, you’re only here because he sent you here?
Jack: Why are you telling me this now?
Juliet: Last night with Sun, we saw the baby growing inside her. If she’s still on this island in about a month, both of them will be dead. I’ve been living Benjamin Linus’s dream for three years. Three years. It’s time to wake up.