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When a hard-working store worker is cut down in a hail of gunfire, veteran Sergeant Pepi Granado and his team must turn to a silent witness-- the store's video surveillance system, which caught the entire murder on tape; Sergeant Jo Ann Kinney and Detective Ed Williams tackle the case of a young couple found brutally killed in their house and learn that the victims knew their killer. They must track down reluctant witnesses deep in the narcotics game before their killer has a chance to get away.