No-nonsense Dr. Maureen "Mo" Cahill is the LAPD's hostage negotiator as well as its in-house therapist. She helps cops deal with their trauma and occasionally gets stuck with a real hard case like Riggs.
Brewster joins previously announced cast members Damon Wayans, Sr. as "Roger Murtaugh" and Golden Brooks as "Trish Murtaugh." Additional casting will be announced.
Lethal Weapon is executive produced by Matt Miller, McG, Dan Lin and Jennifer Gwartz. Miller wrote the pilot script which will be directed by McG.