Serial killer Richard Ramirez, otherwise known as 'The Night Stalker,' terrorized California in the mid-1980s with a series of rapes and murders. A number of women who survived his attacks mentioned his rotten teeth, among other details, helping police create a profile of the suspect.
The United States may have churned out the highest number of serial killers in the world over the years, but it certainly doesn't hold exclusive rights on brutal murders. Learn about some international serial killers and how their respective countries handled their crimes.
After the 2005 disappearance of Teresa Halbach, 16-year-old Brendan Dassey confessed to police that he and his uncle, Steven Avery, raped and murdered her. But Dassey later recanted his confession, suggesting that he'd been coerced into telling the police what they wanted to hear. The jury didn't buy it and sentenced him to life in prison.