Main Characters Off. Jimmy Doyle 1 main appearances Patrol Sgt. Francis X. Donovan 1 main appearances Off. Phil Roussakoff 1 main appearances Off. Hector Villanueva 1 main appearances Sgt. Richard Santoro 1 main appearances Capt. Stan Jonas 1 main appearances Off. Anne-Marie Kersey 1 main appearances Off. Jake Lowery 1 main appearances Off. Nona Valentine 1 main appearances Terry Doyle 1 main appearances Off. Clement Johnson 1 main appearances
Recurring Guest Characters Kathleen Doyle 9 guest appearances Defense Attorney Calloway 1 guest appearances Mr. Hayashi 1 guest appearances Detective Keith Chan 1 guest appearances