Tonight is not technically a "new" episode, but instead they are showing a retrospective exploring events in the lives of the Oceanic 6 and the other island survivors during the three years after Ben moved the island. I'll definitely be watching. I mean seriously... what else would I be doing? Everyone who knows me knows I am totally and completely addicted to this damn show.
In the meantime, go check this out from EW Untangling The Mystery