The last remaining Mustang from the film "Bullit" is stolen, so Danny and Baez investigate. Elsewhere, Erin clashes with Frank when she sides with her boss on a matter involving cops being held accountable for fixing traffic tickets.

When a homicide case ends in a hung jury, Erin is forced to take over the case from her colleague, ADA Kelly Blake, and with the help of DA investigator Anthony Abetemarco, find a missing witness. Also, Jamie and Eddie go undercover as an elderly couple to catch a gang that is terrorizing a neighborhood.