Six days ago, Joe Lynch was a happily married man, a devoted father, and a respected teacher living in a well-to-do London suburb. But that was before he spotted his wife’s car entering a hotel parking garage. Before he saw her in a heated argument with her best friend’s husband. Before Joe confronted the other man in an altercation where he left him for dead. Now, Joe’s life is unraveling. His wife has lied to him. Her deception has put their entire family in jeopardy. The man she met at the hotel has vanished. And as the police investigate his disappearance, suspicion falls on Joe. All he knows is that her actions have brought someone dangerous into their lives --- someone obsessed with her and determined to tear Joe’s world apart.