Kyra Sedgwick Deputy Chief Brenda Johnson Actor J.K. Simmons Asst. Chief Will Pope Actor Corey Reynolds Sgt. David Gabriel Actor Robert Gossett Commander Taylor Actor G.W. Bailey Det. Lt. Provenza Actor Anthony John Denison Det. Lt. Andy Flynn Actor Michael Paul Chan Det. Mike Tao Actor Raymond Cruz Det. Julio Sanchez Actor Phillip P. Keene Buzz Actor Mary McDonnell Captain Sharon Raydor Actor Jon Tenney Special Agent Fritz Howard Actor Fred Willard Santa Jack Guest Star Christine Woods Casey Watson Guest Star Ransford Doherty Kendall Guest Star Lauren Bowles Donna Guest Star Mark Pellegrino Gavin Q. Baker III Guest Star Barbara Costa Martins Carmen Guest Star Ivory Tiffin Lisa Guest Star Liz Vital Belinda Guest Star Rick Wallace Director James Duff Writer Michael Alaimo Writer