Each time that night begins to fall, she walks around turning on every light in every room, lighting up the landscape surrounding her home. She never stops to think that someone may be using that light to look in at her. Because of Stefan’s death, Siri’s life isn’t tranquil anyway, but she begins to realize that someone is purposely trying to shatter her peace of mind. She gets a threatening note, her cat disappears, a disturbing new patient shows up, another patient receives a letter about her, and someone, probably someone she knows, is tightening the noose. She begins to question almost everyone around her — fellow psychologists, patients, friends. Who among them is doing this to her?