Watch The First 48 Season 21 Episode 18 Online

When a homeless man is found dead and an accidental death seems most likely, Detective Ryan Vaught must convince the squad it’s cold blooded murder. In New Orleans, when a new father is brutally gunned down, Detective Drew Deacon’s only lead is pinned on something the killer left behind. Detectives investigate on the highway when a driver is hit by AK-47 gunfire from another vehicle. After two young men are killed, Detective Nick Williams tries to get their friend to change his ways before he becomes another victim.