Kate watches Gates interview drug user Wes Duke, the last man to see the pushers alive. He releases him but he is later found dead on the estate, killed as a supposed informer. Arnott discovers that Gates knew Jackie Laverty well before her car was reported stolen and confronts her. However Gates discovers that Jackie deliberately murdered the hit and run victim as he had discovered she was a money launderer. He arrests her but she persuades him to let her go and they return to her house where they are attacked by masked intruders who cut her throat.