In November 2018, serial killer Samuel Little, 78, confessed to murdering 90 women. While the number may be astonishing, the duration of Little's homicidal behavior, and the ages at which he committed his crimes, are also noteworthy.

Convicted serial killer Samuel Little recently confessed to 90 more murders. If all of his killings are confirmed, Little, currently age 78, would be the most prolific serial killer in American history. Learn more about Little and his confession.

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.