Victoria and Christine Lisowski live in fear of their mother, Sungnam Kwon-Lisowski; they never imagine that this Christmas, they'll feel lucky to survive the holiday and their mother's crazed vengeance.

Tammy Moore's loyalty to her mother, Marie, is absolute; when police arrest Marie for murder, Tammy lies to protect her; a look back at the horrific events of her youth forces Tammy to see her mother in a new, terrifying light.

Christina Thomas believes her brother, John, the first time he nearly kills a woman; she forgives him when he murders another; but when it happens again, she wonders why she trusted him and how she missed the signs he was really a devil in disguise.

Vince Boston finds himself an unwitting accomplice to murder; he realizes his father, Silas, has been killing for years; he embarks on a mission to get justice for his father's many victims, which may include Vince's mother.

When Terry Patzer hears what police discovered at Russell Tillis' house of horrors, memories of the nine years she spent married to him come flooding back; she cannot explain how her former lover became so twisted.

Ginger knows her sister Paige is trouble, as she feels entitled to her family's undivided attention and becomes a monster when she doesn't get it; over time, Ginger watches as Paige abuses and ultimately murders the person she cares for the most.