'Til death do us part... Lyda Marling is thrilled when Lilli, her older sister and only living relative, gets married. The wealthy Jason Ducat, Lilli's new husband, has children from a previous marriage, and Lyda hopes to find a place in their family. She's so happy to become part of their lives that she manages to overlook the many strange—and not quite right—aspects of life in the Ducat household. But strange turns horrifying when Lilli dies suddenly and mysteriously. And Jason has a twisted plan for comforting his new sister. Now Lyda can only hope that family is not forever....