Have you ever wondered how murderers and serial killers do it? How they can kill and show no remorse for their actions? How some of them can stare coldly into the eyes of their victim, who has most likely been desperately pleading for their life, and still do such horrendous things? Nearly one third, if not more, of murders in America go unsolved. There are around three to four murders per every 100,000 people, and about 340 million people living in the United states of America. That is about 64,000 unsolved murder cases each year. Isn't that terrifying, knowing that if you or someone you loved was murdered there is a one in three chance that it would never be solved?