After lying through their threet about the pilot's death, Doctor Jack realizes just how good liar Kate really is when the mortally injured marshall, Edward Mars, reveals she was the prisoner he was trying to bring back to L.A., there's nothing he can do about it for she has already left with unsuspecting 5 passengers to try to send a messge with the very transceiver the Doctor trusted her when he didn't know who she was.
Drug addict Charlie keeps trusting the convict murderer as he did on the first part of the pilot, siblings Boone and Shannon keep trying to prove themselves to one another and the irony is that the soldier Sawyer just accused of terrorist may be the only ally he can count on once he figures out what Kate really is, after they shots a polar bear that simply didn't belong there. Something else that also didn't belong there? A french transmission Shannon translates for them, a transmission that has been repeating in a loop for over 16 years:"... they are dead, it killed them all, I'm all alone now, please ...someone come."
They may as well end up being the aid for someone else before they could receive aid themsleves.