A young teen girl reportedly went from being a bright, happy, excellent student with no criminal record or behavioral problems to murdering her mother in cold blood and attempting to kill her stepfather, all in the blink of an eye. What could cause something this horrific to happen, seemingly, out of the blue? How did a 14-year-old little girl go from being a bright, happy soul to a ghoulish killer who went so far as to invite a friend over to view her mother's dead, mangled body?

NBC 15 News:

A 14-year-old girl from Mississippi who was accused of killing her mother invited a friend over her house to see her mother's dead body, an investigator testified in court.

Carly Madison Gregg appeared in court for a preliminary hearing, which was recorded and released on YouTube by the blog Jackson Jambalaya, on April 16.

Carly was arrested in March after she allegedly murdered her mother, Ashley Smylie, as well as seriously hurt her step-father, Heath Smylie, during two separate shootings at their Brandon, Miss., home.

Rankin County Investigator Zachary Cotton testified at the hearing, saying dispatchers received a call from a man, later identified as Health Smiley, who said his child had shot him and his wife on March 19.

The footage also shows Carly hiding something behind her back — which Cotton believes is a gun. He said Carley then texts her step-father, who was not home yet, asking when he would be at the house.

Cotton said it wasabout 45 minutes to 50 minutes before Heath arrived at the scene.

In the meantime, he said Carly texted a friend, asking her to come over and saying it was an emergency.

Carly asked her if she had ever seen a dead body before," Cotton said. "She said no. She proceeded to show her deceased mother, who was in the bedroom, (and) showed the gun that she used to shoot her mom. (She) told (the friend) she had three shots for her mom and that she's got three more for her step-dad — two to the head, one to the chest."
Heath told investigators he was shot as soon as he walked into the house, said Cotton, noting that Health said Carly's "eyes were really big" and "it looked like she had seen a demon." Health told investigators Carly was screaming and then ran off.

The friend was outside in the backyard when the second shooting took place, Cotton said.