Over the last 50 years, men have committed murder 10 times more often than women. But just because a woman's fingerprints aren't at the crime scene doesn't mean her fingerprints weren't on the plan. A&E Real Crime looks at some of the most memorable cases.
Jeffrey Dahmer was just 18 when he committed his first murder, much younger than the average age of serial killers, which researchers have determined is around 29 years old. Why did he wait nearly a decade before killing his next victim?
Over nearly two decades, Dennis Rader murdered at least 10 people in the Wichita, Kansas area under the pseudonym BTK ('Bind, Torture, Kill'). But despite his repeated taunts to the police and media, investigators were unable to hone in on a suspect.