A look at antisocial adolescents who found unity in gangs or criminal cults only for tragedy to strike.

The body of an elderly woman is found spray-painted in red; a boy kills his grandparents after he was prescribed a medication for anxiety.

When their parents disapprove of a teenage couple, the outcome is homicidal leaving a family in tatters; a lonely, young girl is befriended by a group of disaffected teens.

Sophie Lancaster was a twenty-year-old English woman who was beaten to death in 2007 for dressing in the Goth style. Sophie and her boyfriend, Rob, were attacked while out walking together. One of the responding emergency professionals was unable to tell whether the victims were male or female due to the extent of their injuries.

Canadian serial killer Peter Woodcock, a teenager who murdered three young children in 1956 and 1957. Woodcock was placed in psychiatric care. While institutionalized, he murdered a fellow psychiatric patient in 1991.

In 1993, two British young friends abducted two-year-old James Bulger, took him to a railway track and brutally murdered him. In Canada, a young boy arranges for his two friends to murder his mother and grandmother while hanging out with a girl to establish an alibi. While running away from their California homes, two teen girls murder an elderly woman for her car.

Young sex offenders who kill.

On April 23, 2006, Canadian police find the bodies of the Richardson family; a young teen convinces her boyfriend to murder her overly strict grandmother; in France, Pierre Folliot murders his parents and his brother but his sister survives.

Matthew Reid was a 3-year-old foster child from Canada who had been with the same foster family since the age of 10-months. The family took in an additional foster child about whom they knew little. This new girl, a young teenager, suffocated Matthew on her first night in the home. The girl was found to have mental disabilities. Though she was known to have violent tendencies, the new foster parents were not told of the problems.

In Canada, a 7 year old boy is murdered and partially eaten by a 14-year old. Elyse Pahler, a fifteen-year-old California girl who snuck out of her parent’s home to meet three male acquaintances from school. The boys-teenagers who had a heavy metal band-killed Elyse as a sacrifice to Lucifer so their band would take off.

A Texas girl convinces two friends to commit a crime; a girl gets her boyfriend to solve her issues with her mother for good.

Eight days after the Columbine massacre, Canadian Todd Smith opens fire at his high school, killing one student and wounding another. In 1995, French teen Leila Zafar murders her friend in her school restroom after an argument. In 1997, American youth Luke Woodham murders his mother before going to Pearl High School to murder his ex-girlfriend, her friend and wounding 7 others.

An outcast joins a military-style cult of misfit teens who are brainwashed into committing crimes; two high-school football players share a fantasy of carrying out an armed robbery.

The 1997 murder of a family in Washington state; the 1991 disappearance of two kids in Virginia.

A hometown hero is connected to the murder of a Montana business owner. John Olson is shot in the same town a day later.

Danielle Black murders her father in Hagerstown, Maryland. The husband of a woman having an affair with a teen is found shot dead in the doorway of his home.

When a young girl mysteriously goes missing, the perpetrator turns out to be a 15-year-old killer acting on impulse; a teenager poisons her grandmother for no apparent reason.

Two girls in love conspire to commit murder after they are bullied and shunned; two teens fall in love with the same girl and it changes all three of their lives.

A teen boy gets involved in a dangerous online relationship; a very real monster terrorizes Amarillo, Texas, on Halloween night 1979.

Raised in a polygamous cult, a 16-year-old boy is cast out and forced to fend for himself. When this hardworking teen turns to drugs all hell breaks loose in West Jordan, Utah. To the outside world, the Crains seem to be a model family. But there's a darkness lurking alongside a family heirloom that shatters their lives with deadly force.

A Florida girl crosses paths with a group of New Orleans misfits and their vampire leader. The son of a hippie chooses murder over peace and love.

A violent ex-con's jealousy leads to a massacre; a boy shows early signs of being a psychopath.

A family's 2004 murder in Roswell, N.M., is the focus.

A 1991 robbery of an auto parts store goes awry; a thief kidnaps a cashier at a convenience store.

Police discover six people murdered in two adjacent farmhouses on a 450-acre dairy farm. Then, firemen respond to an abandoned building on fire and find the burnt corpse of a 9-year-old neighbourhood girl inside.