The First 48: Gangs of Little Havana/Execution in Coconut Grove

A wall of silence from a frightened community hampers efforts to solve a brutal murder; and a mother of two is shot execution-style in her kitchen in an affluent neighborhood. In a visual style more like drama than reality show, we tail Miami homicide investigators as they race time to solve these murders. Who're the suspects? Are the detectives right? With cliffhangers at each break, both cases in this gritty episode will keep viewers guessing until the end.