Y/N is an FBI agent with a special mission. Serial Killer Billie Eilish has returned after being caught when her team was already settling down from the case. Billie had committed multiple homicides, and there's no time to waste. Now you and your team are the only ones who can catch her and put an end to it. How could this possibly go? (This whole thing is completely inspired by Criminal Minds) Possible mentions of murder/abuse/torture/violence and language so read at your own risk. #2 in avocado #6 in homicide #2 in billieeilishxreader #4 in homicides