When Abbi sees her boyfriend's darkness, she tries to help but cannot. She hopes being a father will change him, but it doesn't. When his cruelty becomes too much to handle, she leaves and quickly discovers who her boyfriend was all along.

When Claire Throssell meets Darren Sykes, she thinks her future husband's overwhelming displays of affection are signs of love. She fails to see that Darren is out to control her, and if he doesn't get his way, the revenge he takes will be terrible.

William Knorr's mother, Theresa, always threatened that if she ever went to jail for what she had done, she would take him down with her; after years spent helping her keep the horrors secret, he may go to jail with her.

As a boy, Eric Witte's father taught him to protect his family. But as his father grows increasingly violent, Eric realizes that he is the evil his family needs protection from.

As a young boy, Michael Blanco had seen his mother do violent things that seemed straight out of the movies. But he never once doubted that she did those things to keep their family safe—until the day he learned the truth.

Charles Sexton believes his father, Eddie, is God; he and his siblings are loyal disciples until the family descends into madness, and Sexton finds out that crossing his parents means death.

As a little girl, Karen Kuzma adores her older brother, then she sees changes in him she doesn’t understand; it never occurs to her that he will become the most infamous serial killer in American history.

Kat Harris and Marla Kreuger love Lawrence Harris each in her own way; they dismiss his dark obsession as childish and strange, but harmless; neither of them realize he is preparing to sacrifice innocent lives for his evil purpose.

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

Tiffany Shore grows up knowing her father is evil but keeps his secrets, then she escapes only to be devastated by the discovery that he has committed acts far more heinous than she could have ever imagined.

Melissa Moore loved being “Daddy’s Little Girl” and to her, her father Keith Jesperson, could do no wrong. But as she got older, that admiration was replaced by fear, and then by the horror of learning how close she had come to being his next victim.

Reginald Brooks began acting strangely, and Beverly Stephens worried that her husband’s bizarre behavior was a warning sign that something wasn’t right. But she never suspected there was a killer lurking inside him.

When Joshua Hudnall goes off to war, he feels more at home than he ever did around his mother; while Joshua thinks he’s escaped his mother’s torment, she sets her sights on someone else and destroys their family from within.

When Elizabeth Flores was a child, her sister, Louise, tried to shield her from a horrible family secret. But when Louise met David Turpin, that all changed. How did Louise go from running from monsters to becoming one herself?

Teri Knight spent weeks driving cross-country, desperately searching for the secret her ex-husband, Manuel Gehring, took to his grave. It took years before a stranger finally solved the mystery that haunted Teri ever since learning Manuel died in prison.

George and Margaret Keller never suspected that the man terrorizing their city could be a member of their own family. As it dawns on them that their son is hiding a sinister secret, they must decide whether or not to turn him in.

Dennis Ryan grew up believing that his father's violent teachings were preparing him to save the lives of everyone in their farmhouse. But by the time Dennis discovers the horrible truth, it is too late-he has already gone too far.

When Sarita Anderson begins feeling ill, she thinks it's just the flu at first; she never suspects that the man pretending to love and nurse her back to health is actually the monster responsible.

Though Ronald Hawkins and Candace Sims knew that Robbie was different from an early age, they were unprepared for the violent act that Robbie would commit, a crime that shook the nation.

Coming from a broken home, 16-year-old Cathy wanted nothing but love; After meeting Peter Tobin, a man twice her age, she thought she had found the perfect gentleman; After her marriage, Cathy gradually uncovered horrifying secrets about her husband.How would she keep herself and her son alive long enough to escape one of the most evil men in modern history?

Sean Lewis isn't surprised to hear his brother Patrick has been arrested again, but this time around, Sean learns he has been helping a monster lead a secret double life by repeatedly helping his brother get out of jams.

When Jason Worley tries to escape from his manipulative wife, Brandi by filing for divorce, she punishes him by taking away the two things most precious to him.

Ainjil thinks William was charming and creative, but his dark and violent tendencies emerge; when Ainjil finally gets away from him and starts a new life with a man she truly loves, he exacts revenge.

Ron Youngblood always dreamt of having a family. When he meets Veronica, he thinks his dreams are coming true; instead, it's a nightmare; she's cold, cruel, and unfaithful. When Ron tries to leave, she destroys everything he cherishes.

Wallace Jeffs was raised to believe that his half-brother, Warren, would guide his family to salvation. But when his nephew reveals Warren's true nature, Wallace will have to choose between loyalty to his family or to his church's new prophet.