James Manning (Tom Wilkinson), a successful business lawyer, and his younger wife, Anne (Emily Watson), split time between a London apartment and a lush country estate. The couple's seemingly perfect marriage gets complicated when their handsome and wealthy neighbor, Bill (Rupert Everett), returns to town and Anne begins sleeping with him. After Bill and Anne are linked to a hit-and-run death, James, aware of the affair, must choose whether to protect his wife or come forward to the police.