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.

To Kevin Currie, Mormon prophet Jeffrey Lundgren was more than a spiritual leader, he was a brother. But before long, Kevin realized that this Man of God was really a devil in disguise with an evil plan.

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.

As a child, Corey Breininger's stepmother, Judith Hawkey, coerces him into doing something horrible; he keeps her deadly secret for years, too afraid to tell anyone the truth.

Robert Foust contemplates killing his son, Aaron, as the only way to prevent Aaron from becoming a murderer; instead, Robert chooses to put himself and his son in God's hands, and God's plan makes him question everything.

Joylynn Martinez sometimes wakes up and cannot remember what happened the night before; she thinks she must've had too much to drink, never suspecting that her husband, Robert Howard Bruce, was responsible, and that he was just getting started.

As a boy, Travis Spencer always told himself that the cruel pranks his older brother, Timothy, played on him were ultimately harmless. He never suspected that his brother was using him to practice methods of torture that would be used on others.

Michele Ward was always glad that her husband, Richard Daniel Starrett, didn't mind her frequent trips to visit her parents. She never guessed that he sent her away because his sick perversion was getting harder and harder to hide.

It has been more than 25 years, yet Joyce Alexander is still terrified of her son, William Patrick Alexander; she fears he holds her responsible for his horrifying crime, and is convinced he is plotting his revenge from prison.

Edward Pehowic harbors dark secrets before he marries Robin Healey, and she'd catch only glimpses of her husband's dark side, but when she finally escapes from him, she realizes just how evil he is.

John Duck spends his entire life fearing the day his brother Kevin would finally kill someone, but when John discovers his brother is actually a murderer, he still isn't ready to face that Kevin had been born a killer.

Timothy Bass had gotten away with murder for decades, telling his wife, Gina, that he enjoyed working the night shift to make extra money; Gina believed him until she uncovered his secret and was left wondering what evil her husband had done.

It never occurred to Shirley Gaskins that the father she adored could be one of the most prolific serial killers in America, but the more people vanished without explanation, the harder it was to deny.

Richard and Ryan Girgis knew their father, Magdi, was not a particularly good father, but when their family is torn apart, the brothers feel they knew he was evil all along.

Jack Roy Spillman starts collecting wolf memorabilia, and his sisters think it's an odd hobby; when they learn of horrific things he's done, they realize some people may have been right when they called him more animal than human.

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.

Tammy Moore's loyalty to her mother is tested after police arrest Marie for murder. But a look back at the horrific events of her youth forces Tammy to see her mother in a new -- and terrifying -- light.

Christina Thomas trusts her brother, John White, the first time he comes dangerously close to killing a lady. When he murders another person, she forgives him. But when it happens again, she wonders why she trusted him in the first place and how she overlooked the warning indications that he was the devil in disguise.

Vince Boston finds himself an unwitting accomplice to murder, and 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 flood back; she can't explain how her former lover became so twisted, but she was right to be afraid.

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.

Teresa Holman spends much of her childhood wishing her father, Freddie Bowen, would die for the things he does to his family, but when presented with a chance to get her wish, the choice she makes has unforeseen consequences and leads to tragedy.

Sara Pitcher thinks Shawn Spink is a man of God, but she'll soon endure three-and-a-half hours of pure terror to save herself from the darkness within him; police believe Sara's survival is a miracle -- even so, her life will never be the same.

Eugene Borg knows that Satan has evil plans for his young son Tyler and spends the subsequent years battling the demons he believes plague his child; a shock comes that proves that he may have forever lost the war for his son's soul.

Unlucky in love, Jamie Clark has high hopes after meeting Anthony Lord; by the time she learns about his perverted plans for her, she is already trapped.