Killer {Derek Morgan x Reader}

"Y/N L/N, where were you on the night of October 31st?"
"Trick or treating."
"Can anyone account for that?"
You glance at Agent Morgan before looking back at Agent Hotchner. "Aren't you going to ask what I picked?"
"What?"
"For trick or treating."
Hotchner pauses, uncertain.
Morgan spoke up, "What'd you pick?"
"Trick." The trick was a bullet. To the back of his pathetic head.

Y/N is a serial killer at large. While your murders are under investigation, you meet Derek Morgan. Something unexpected happens. You fall in love.
Will you be able to continue your murder streak while being in love with an FBI agent?
If he finds out, will he arrest you and turn you in?
You may never know.