Big Love is an HBO drama about the Henricksons, a polygamous family with its roots in a fundamentalist Mormon splinter group hiding in plain sight in a Salt Lake City suburb. The series lasted from March, 2006 to March, 2011, with a total of 53 episodes in five seasons. Margene 'Margy' Heffman is the third wife and the youngest. She was a klutzy employee of Bill who was not born a Mormon. Hired as the babysitter, she was very attracted to Bill and joined the family. She's been the breeder of the family with three kids in the short time she's been married.