Mississippi teen murder suspect caught on camera in chilling footage after allegedly killing mother

A chilling video was shown during the trial of a Mississippi teen accused of murdering her mother, capturing the moments before and after the alleged crime. The footage showed the teen, Carly Gregg, acting nonchalant and texting after allegedly shooting her mother with a .357 Magnum pistol. Gregg was seen hiding something behind her back before the gunshots rang out. Following the shooting, she calmly returned to the kitchen where her stepfather arrived and a struggle ensued, resulting in him being shot in the shoulder. Gregg pleaded not guilty to the charges and her defense team is pleading insanity.