Dog Day Afternoons

Lilly investigates the 2000 murder of a bank teller, who was gunned down during a robbery by thieves wearing Johnny Cash masks and carrying sawed-off shotguns, after the same bank is hit again by robbers wearing similar masks and equipped with identical weapons. The probe reveals that the victim may have known her killer. Back at headquarters, a man from Lilly's past shows up and wants to rekindle their relationship.