A 16-year-old girl and her 18-year-old boyfriend are accused of killing the girl’s father and bragging about it on camera. Police believe Sierra Halseth and Aaron Guerrero killed Sierra’s dad Daniel because he didn’t approve of their relationship. After her parents banned Sierra from seeing Guerrero, her dad disappeared. After being missing for two days, his body was found in the garage of his house. The dad had been stabbed to death and his body set on fire. The teens have been charged with murder. #InsideEdition