In 2011, in Columbia County, Georgia, 14-year-old Alana Calahan's body was found in the woods at the back of her house. Suspicion quickly fell on 14-year-old Aaron Schmidt, who was like an adopted son to the Calahan family.

Skylar Neese's two best friends, Shelia Eddy and Rachel Shoaf, killed her after they decided they just didn't like her anymore -- Skylar and her friends were just 16 years old.

Jason Sweeney was 16 years old when he was lured to his death by his girlfriend. For the first time we hear from Jason's sister, as well as the police officers who investigated and tried to make sense of this heinous murder.

Cole Cannon was brutally killed by 14-year-old Evan Miller, and 16-year-old Colby Smith. The boys beat him with a baseball bat, and stole $350 and his baseball card collection before setting fire to his trailer.