Based on Harlan Coben's bestselling novel, 'The Stranger' follows Adam Price, a happily married father of two whose life is turned upside down when a mysterious stranger approaches him in a bar and reveals a shocking secret about his wife, Corinne. As Adam attempts to uncover the truth and track down the elusive stranger, he finds himself entangled in a dark web of suburban conspiracies, blackmail, and murder. Simultaneously, local police detective Johanna Griffin investigates a bizarre local case involving a headless alpaca and a naked teenager found wandering the woods. As the stranger continues her crusade of exposing secrets to various residents of the affluent town, the lives of multiple families unravel, revealing that everyone has something to hide and nobody is truly safe from the consequences of the truth.