Three harrowing tales of three teenage girls who left behind a trail of murder and mayhem.

On the surface Alyssa Bustamante was a pretty 15-year-old girl who excelled in school. Behind closed doors, however, Alyssa was teenager with a dangerous psychosis...she fantasized about killing someone. Her social media pages and diaries all painted the portrait of someone with an irresistible compulsion to inflict pain onto the world. Her thoughts growing darker by the day, Alyssa dug two graves in the woods outside her home and waited...waited for the perfect victim. On October 21, 2009, she found one.

Tylar Witt lived in an affluent neighborhood in El Dorado Hills, California, with her 47-year-old single mother, Joanne Witt. Everyone who knew her described her as sweet, but fights were increasing between her and her mother. Tylar was turning into a different person; she was becoming a killer.

In 1992 Melinda Loveless would lead a gang of teen girls in the torture murder of Shanda Sharer. Caught in a lesbian love triangle, the four girls would torture the young Shanda and burn her alive. The case would shock the picturesque town in Southern Indiana and make national headlines, making an entire nation ask "why?"