After a drug addict (Dee Freeman) brings in an audio tape she found on which a fatal shooting is heard, Lilly reopens a 1973 murder case involving the death of a 21-year-old rookie cop (Cory Hardrict). The young officer was shot three times in the chest while responding to a call at a drug-infested housing project. Also on the tape are the victim's final words: "Runner! Runner! Runner!"