Detective Mac Taylor is a dedicated crime-scene investigator who believes that everything is connected and everyone has a story. He and his partner, Detective Stella Bonasera, lead a team of experts through the gritty, kinetic world of New York City. The body of a middle-aged man is found in the elevator of a ritzy doorman building on the Upper East Side. Mac Taylor and Aiden Burn's initial investigation yields no bullets, no DNA evidence, and no motive. Could this be the perfect crime?