Following the death of his employer and mentor, Bumpy Johnson, Frank Lucas establishes himself as the number one importer of heroin in the Harlem district of Manhattan. He does so by buying heroin directly from the source in South East Asia and he comes up with a unique way of importing the drugs into the United States. Partly based on a true story.

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.