“Law & Order” is a blended police procedural and courtroom drama set in New York City. Often derived from real-life headlines, the show’s structure is two-part, with the first half focused on the criminal investigation, and the latter half set in the courtroom. Despite being known for its revolving cast, the series managed to keep a unifying identity even as its familiar faces were replaced with new ones over the years. "Law & Order" creates tension and suspense through the complex interaction of its many characters, from the criminals to the defense attorneys, any of which can have shadowy intentions hidden up their sleeves. In addition to the tension and twists, the chemistry among the cast mainstays kept viewers emotionally engaged over two decades.