All the Best Cowboys Have Daddy Issues

Survivors wonder why Charlie and Claire have been abducted - and by whom - and a search party ventures into the treacherous jungle to look for the pair. Suspicions focus on Ethan Rom (guest-star William Mapother), who, it was recently discovered, was not a passenger on the doomed flight.  Jack battles inner demons relating to his father,  while Boone and Locke discover another island mystery.