Dr Spencer Reid was a total nerd. Even in the BAU, doing important cases and solving murders, he found himself giddy at the opportunity of bringing up facts he'd found in books or studies. So, of course, for Halloween, he had to incorporate one of these facts into his costume. Initially, he wasn't even going to wear a costume, but when the team set out for a Halloween party as a way to give themselves a break from work, he knew he had to make something unique.

So, into the bar he walked, wearing an old 1920s mobster-esque. He was going as a variant of Al Capone, from a book he'd read into, but of course nobody knew that. He sat at the bar, which was almost empty, and took the seat furthest from the other person at the bar; which just so happened to be you.

"Al Capone, huh?" A voice spoke up near him. He looked up to see you, admiring his costume. Immediately, he was interested.

"You- uh- you know who I am?"