Michael Cudlitz John Cooper Actor Ben McKenzie Ben Sherman Actor Regina King Detective Lydia Adams Actor Tom Everett Scott Detective Russell Clarke Actor Michael McGrady Detective Daniel "Sal" Salinger Actor Kevin Alejandro Detective Nate Moretta Actor Shawn Hatosy Detective Sammy Bryant Actor Arija Bareikis Patrol Officer Chickie Brown Actor Patrick Fischler Detective Kenny 'No-Gun' Guest Star C. Thomas Howell Officer Dewey Dudek Guest Star Lex Medlin Detective Andy Williams Guest Star Roxana Brusso Detective Alicia Fernandez Guest Star Hedy Burress Laurie Cooper Guest Star Jonathan Castellanos Lil Casper Guest Star Gabrielle Dennis Michelle Hill Guest Star Lee Garlington Cathleen Kerik Guest Star Blake Hightower K-Dog Guest Star Robbie Jones Tyler Prescott Guest Star Veralyn Jones Leslie Hill Guest Star Mo McRae Sisqo Guest Star Maria McCann Mallory Guest Star Tom Wright Mr. Hill Guest Star Carlos Ayala Gunshot Victim Guest Star Nancy Bellany Patrol Officer Guest Star Elizabeth De Razzo Girlfriend Guest Star Jonathan Emerson Lawyer Guest Star Travis Johns Officer 1 Guest Star Ian "Blaze" Kelly D-Bone Guest Star Akie Kotabe Roommate Guest Star Elisa Leonetti Female Laywer Guest Star Donald Li Coroner Guest Star Ricky Dean Logan Glenn Guest Star Gary DeWitt Marshall Assistant Coach Guest Star Annie McKnight Neighbor Woman Guest Star Kathryn Melton Grandma Guest Star James Reese Man Who Sobs Guest Star Lola St.Vil Woman (as Yves Lola St.Vil) Guest Star Alison Shanks Assistant Guest Star Bill Stevenson Minister Guest Star JoAnn Willette Wendy Henlen Guest Star Elvy Guest Star Leah Zhang Nurse Guest Star Justin Klinger Officer 2 Guest Star Fancy Acholonu Nicole HIll , Runner Victim Guest Star Jeremy Nahmiash Funeral Attendee Guest Star Johnny Sale Rehab Patient Guest Star John Wells Executive Producer Ann Biderman Executive Producer Christopher Chulack Executive Producer Diana Son Writer Guy Ferland Director