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 Elizabeth Perkins Gail Meyers Guest Star Maggie Wheeler Gail's Friend Guest Star Mark Moses Commissioner Jay Meyers Guest Star Aimee-Lynn Chadwick Kelly Meyers Guest Star Claude Knowlton Restaurant Manager Guest Star Becca Gardner Gracie Ann Gates Guest Star Kevin Brief Mr. Gates Guest Star Loanne Bishop Mrs. Gates Guest Star Andre Hotchko Long Island Police Officer Guest Star Tatjana Bluchel Witness Guest Star Hector Escalante Jose Reyes Guest Star T. J. Myers Vicki Guest Star Nelson McCormick Director Jim Leonard Writer