Idea: Castiel turns up in front of Spencer Reid who is convinced he is a hallucination. He tries to apologize for this and ends up making the situation worse.

"Holy...!" Dean yelped when he turned around to find that Castiel had appeared directly behind him once again. Dean was growing tired of giving Castiel the lecture on personal space. He suddenly had an idea.

"New rule Cas." Dean said. "When me or Sam tells you what motel we're staying at, you turn up, or land, or whatever it is you do three feet away from the soda machines and then you walk to our room and knock on the door."

"Understood." Castiel replied.

&!&!&

Spencer Reid swore under his breath when the soda machine ate his change. First, they were stuck staying at a roadside motel in the middle of nowhere because that was all that the small town had to offer by way of lodgings, and now this. Things just kept getting better and better.

He had turned to go back to his room when the man in the trenchcoat appeared three inches away from his face. His only response to this was fall backward in shock and land on his ass. The man tilted his head to the side and stared down at him with oddly intense blue eyes. The man then opened his mouth to say something.

Spencer scrabbled backwards, got up, and ran back to his room before the hallucination or whatever it was said something that destroyed his life. He knew it wasn't logical, but in this instance, logic didn't enter the equation.

&!&!&

Castiel found himself turning the incident over in his mind on the way to Sam and Dean's room. Was invading a person's personal space truly that upsetting to a human being? His own brothers and sisters didn't really seem to mind if he landed half an inch away. He would have to apologize and make it up to the young man after the current crisis was over. He knew who the man was, and he would easily be able to find him again.

&!&!&

The second time Spencer had seen the man in the trenchcoat, he had been at home indulging in one of his guilty pleasures. If Morgan or Garcia knew that he was fond of fantasy...

Spencer turned the final page of the fifth book in the Supernatural series when a shadow fell over him.

"I see you are reading the Winchester Gospels." said a deep voice from behind him.

Spencer whirled around to find the man from the motel a foot behind him. He couldn't possibly have gotten in here, all of the windows were closed and he was certain that he would have heard the front door open and close since it was less than ten feet away. He couldn't be here.

Which meant...

Spencer didn't know what had possessed him to run to his room and hide under his bed in an attempt to flee from an hallucination.

&!&!&

Castiel frowned. He had been standing one foot and two and five sixteenths inches away. He had been sure that that would have been enough space for the skittish human. Apparently it wasn't. In attempting to apologize for committing an offense, he had committed another offense. Perhaps he should consult with Dean.

&!&!&

{final lines}

The man took a call from someone named Dean. The person on the other end of the line sounded rather panicked. The man vanished.

"Ah, I see how that could be a problem considering..." Rossi said.

Spencer wondered how Rossi could be so calm about what had just happened.

"Did I ever tell you about the time I ran into a real demon?" Rossi asked.