The Future's Calling, and It's not Pretty
"Oh, shut up," the doppelganger said, crying and laughing. He looked like Martin, but that couldn't be right because Martin was watching this all unfold. "Now, I'm sorry to just pop in, but I have no clue how long I was in the halls - yes, I know you know - so I'm probably about to pass out. Sorry."
True to his word, he slumped down against the wall. Somewhere, a tape recorder clicked off.
"Alright," Tim said when the silence got uncomfortable, "We're not going to try and pretend that wasn't supernatural, right?"
(or, a time travel au, but this time with monster!Jon)