For three years, Elena has hunted the woman sleeping with her husband, Nathan—tracking him, checking bank records, and nearly destroying herself while everyone calls her paranoid. Only Tessa, her best friend of eighteen years, believes her. Then Elena overhears Nathan confess his love to Tessa. Instead of confronting them, she walks into the hospital room with soup and a smile—then starts setting Tessa up with other men. How far will Nathan go to stop her?