A wall of silence from a frightened community hampers efforts to solve a gang-related murder; and a convenience-store owner is shot twice in the head in what seems to be a robbery gone wrong.

In a visual style more like drama than reality show, we tail homicide detectives during the initial critical 48 hours as they race time. Who're the suspects? Are the detectives right? With cliff-hangers at each break, both cases in this fast-paced, gritty episode will keep viewers guessing until the end.