Things get even more mysterious in episode 11, entitled "Cabin Fever", a Locke-centric episode.
After a hiatus for two episodes we finally get to see what has been happening on the Freighter. It was a welcome mix of events from the three groups: Locke, Ben, and Hurley heading to the cabin, Sayid and Desmond on the Freighter, and a little of Jack and company on the beach. But mostly concentrating on Locke and the cabin, this episode was perhaps the most mysterious of season four so far.
What I Liked
I must first point out my joy in seeing what has been going on on the Freighter. For the last two episodes there hasn't been a single frame of footage from that perspective (with a hint of what went on by the Doc washing up dead on the beach) and now we can coordinate what we saw in this episode with what's been going on in the last two. We see Keamy and his team come back onto the Freighter after being attacked by the Smoke Monster but there's a strange thing that we see when they arrive — the Doc appears to be alive and well when we saw him dead a couple of episodes back.
Shortly after they arrive we hear the Morse code that Daniel sent last episode and one of the soldiers mentions to the Doc that the people on the Island say he's washed up with his throat cut. And shortly after that there's a ruckus among Frank, the Captain, and Keamy as Frank won't fly the helicopter because he knows the team will kill everyone on the Island if he does.
Subsequently the Doc's throat is slit and the Captain shot dead, giving Frank no other choice but to fly Keamy and his team to the Island as planned. Why is it that the Doc appeared dead hours earlier on the Island than when he seemed to actually get his throat cut on the Freighter and thrown overboard? Is it because of the difference in time there seems to be between on and off the Island? It seems an outlandish but logical (in Lost's frame of mind anyway) explanation.