Castle Rock, refers to a movie studio where they have a fake white house set.

It is believed by some Biden is not in the actual white house, but is in the studio, awaiting trial. There are a lot more details to it, including some interesting pieces of evidence that give some credence to the theory, but its such a damn reach we might as well grandiose tin-foil hats on our heads while getting in line at the Burger King. Not to get food, but to be knighted by the King.