2003, Livermore, California: 17-year old Katie Bellflower seduces a high school classmate s husband, 20-year old Mike Simons. The young Monstress is willing to kill not just once--but twice--to keep Simons to herself. And in Los Angeles in 1991, 35-year old Brandita Taliano works the streets until she becomes the full-time mistress of 55-year old Dennis Dawley. When Dennis wife of 33 years is brutally murdered, all signs point to Dennis and his Monstress.