Lucy Chen is the FBI Counterterrorism Chief/Captain, when Mid-Wilshire gets a lead in a cold case of hers, she comes over. The case is brutal, and only so many people can know about it. So Lucy asked Wade Grey (Watch commander) to pick a group of people he trusted. He picked Angela Lopez (detective), Nyla Harper (detective), Tim Bradford (Sergeant), John Nolan (TO), and Aaron Thorsen (P2). They are all hostile towards Lucy. (And Tim has a kid and everyone knows, but Angela and Wade have met her)