Guest Stars Randy Flagler as Firefighter Harold Capp Miranda Rae Mayo as Lieutenant Stella Kidd Nick Gehlfuss as Dr. Will Halstead Lauren Stamile as Susan Weller Jenny Mollen as Detective Bianca Holloway Barbara Eve Harris as Commander Emma Crowley Maxwell Jenkins as J.J. Holloway Co Starring Anthony Ferraris as Squad 3 Driver Tony Ferraris Violet Hicks as Sally Michael Weber as Al Nelson Rainbow Dickerson as Liz Brexel Jaclyn Hennell as Mary Holloway Erica Bittner as Olivia Timothy W. Hull as Lucas Joseph Fleetfoot Sada as Armand Grier Burke as Kate Sophia Hubert as Sally (Prosthetic Double) Uncredited Anne Lockhart voices Dispatcher