Evelyn Fox’s son – a father of four - was shot while trying to help a friend in trouble. Shauna Brown lost her son in a drive-by shooting as he played with his two-year-old daughter on the steps of their family home. Barbara Gill’s son was gunned down when a car pulled alongside the moving vehicle he was in and someone opened fire. It’s a club no one wants to belong to. Mothers of murdered men. What’s harder is knowing the killers are still at large and there isn’t enough evidence for police to make arrests. All they need is a single witness to step up. But what do you do when no one is willing to break the code of silence?