Weapons presents a series of brutal, seemingly random youth-related killings over the course of a weekend in a typical small town in America, and tragically reveals how they are all interrelated.

After her dentist husband of 20 years leaves her for his dental hygienist, Reba Hart's seemingly perfect world is turned upside down.​

In cases ripped from the headlines, police investigate serious and often deadly crimes, weighing the evidence and questioning the suspects until someone is taken into custody. The district attorney's office then builds a case to convict the perpetrator by proving the person guilty beyond a reasonable doubt. Working together, these expert teams navigate all sides of the complex criminal justice system to make New York a safer place.