1x9 - Cold Squad

Four years earlier, Rikki Stanfield lied to Ali about what she remembered the night that she and her best friend, Michelle Dorn, were attacked to get Ali to leave her alone. When Rikki starts to remember what really happened she begs Ali to re-open the case, and despite Logozzo's feeling that Rikki is a few bricks short of a load, Ali takes on the case.