In 2014, 18-year-old Conrad Roy III was found dead in his car. The teen had killed himself by carbon monoxide poisoning from running a portable generator in his vehicle without ventilation. What’s even more disturbing about this teen suicide is that it appears to have been encouraged by Roy’s then 17-year-old girlfriend, Michelle Carter. She actively encouraged him to take his own life minutes before his death and the days leading up to it. Prosecutors showed that when Roy attempted to exit his vehicle, which was full of carbon monoxide, Carter spoke to him on the phone and told him to get back in.