Based on the bestselling novel by Harlan Coben, 'The Stranger' is a gripping mystery thriller that follows Adam Price, a happily married father of two whose life is upended by a devastating secret. A mysterious stranger approaches Adam in a diner, whispering a shocking allegation about his wife, Corinne, before vanishing without a trace. As Adam desperately searches for the truth, he uncovers a web of blackmail, deception, and dark secrets that plague his seemingly idyllic suburban community. Parallel to Adam's investigation, Detective Sergeant Johanna Griffin is drawn into a bizarre local case involving a headless alpaca and the discovery of a naked young woman in the woods, Heidi Doyle. These seemingly disparate events slowly intertwine, revealing that the mysterious stranger has been blackmailing numerous residents across the town. As the blackmail schemes escalate into violence, secrets tear families apart and force everyone to question how well they truly know the people closest to them.