"The Last Mrs. Parrish" is a psychological thriller novel by Liv Constantine. The story revolves around Amber Patterson, a woman who is envious of the seemingly perfect life of Daphne Parrish, the wife of a wealthy man. Amber's obsession leads her to devise a plan to infiltrate Daphne's life. As the plot unfolds, themes of betrayal, manipulation, and revenge emerge. Amber's intentions become increasingly sinister as she seeks to take over Daphne's life. The novel explores the complexities of relationships and the lengths to which people will go to achieve their desires.