The Stranger - Harlan Coben

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A secret destroys a man's perfect life and sends him on a collision course with a deadly conspiracy in this shocking thriller from #1 New York Times bestselling author Harlan Coben.
The Stranger appears out of nowhere, perhaps in a bar, or a parking lot, or at the grocery store. Their identity is unknown. Their motives are unclear. Their information is undeniable. Then they whisper a few words in your ear and disappear, leaving you picking up the pieces of your shattered world...
Adam Price has a lot to lose: a comfortable marriage to a beautiful woman, two wonderful sons, and all the trappings of the American Dream: a big house, a good job, a seemingly perfect life.
Then he runs into the Stranger. When he learns a devastating secret about his wife, Corinne, he confronts her, and the mirage of perfection disappears as if it never existed at all. Soon Adam finds himself tangled in something far darker than even Corinne's deception, and realizes that if he doesn't make exactly the right moves, the conspiracy he's stumbled into will not only ruin lives—it will end them.