[Luke nods, knowing what Billy is thinking quite well. He just wants to know how much Billy knows]

I am from roughly ten years after the final film. You can leave out any details after that should you know them. What I'm asking is how much of my past you know. There are things that I've done that...well...we've all got secrets. I feel that some things need to be kept hidden from my father. Anakin is here, and has no knowledge of his time as a Dark Lord of the Sith. He's young, only twenty two.