Ann Stewart

Ann Stewart is a fictional femme fatale and the central antagonist of the 2001 thriller film Thy Neighbor's Wife, also released under the title of Poison. She was played by actress Kari Wuhrer.

Overview
Ann Stewart was married to a man named Chris Stewart. After Chris committed suicide, Ann went around the bend. She changed her name to Anna Johnson, and insinuated herself into the Garrett family's household as a housekeeper. Her motive was to alienate individual family members and through a scheme of emotional manipulation and torture, ultimate destroy them.