Number 66 of 82 is Locke-centric that involve short range flashbacks that don’t involve leaving the island. Ben tells Locke that to be really free he needs to kill his father, but he can’t. Fortunately, the Others have files on every 815 survivor and it just so happens that there is someone who has a motive to do the job for Locke. Turns out Lockes’s father is the very same man who conned Sawyer’s parents when he was a kid leading to their murder suicide.