On this edition of Due Process: the truth behind "American Gangster," Hollywood's version of the rise and fall of a heroin kingpin ... and the cop-turned-prosecutor who tried him and then befriended him. Who could have guessed that 30 years after Newark Narcotics Prosecutor Richie Roberts helped to topple Teaneck druglord Frank Lucas, they'd be played in the movies by Denzel Washington and Russell Crowe?

In the opening field piece, Sandra King talks to Lucas, now a self-styled youth counselor; to Essex Sheriff Armando Fontoura and to two of the cops who actually brought Frank Lucas down. In the studio, Raymond Brown talks one-on-one with Roberts about his real role in the Lucas case 30 years ago ... and his unlikely relationship with Lucas today.