A&E True Crime talks with Dr. Scott Bonn, criminologist and author of the book, 'Why We Love Serial Killers' about what he thinks were the powerful catalysts for the makings of a serial killer.

Some of the most notorious serial killers of our time have something in common, beside their thirst for blood: They were all adopted. A&E True Crime talks to criminologist Dr. Scott Bonn to see whether there is any evidence of an adoptee-serial killer connection.

Dressing in disguise is a time-honored Halloween tradition where self-expression and secrecy often meet. But costumes can also serve a much more sinister purpose. Learn about murderers who literally dressed to kill.

Fred Paige, investigator on the A&E series The Eleven, on why the murders of so many teenage girls in Texas have gone unsolved for so long and the common thread among family members of the victims.

Did you know killer Ted Kaczynski, also known as the Unabomber, had an IQ of 167 and went to Harvard when he was only 16 years old?

Watch a video on the life of the infamous serial killer, Son of Sam.

Forensics has revolutionized law enforcement in the last several decades. We talk to the experts to see how these advancements have helped to close tough cases.

On July 15, 1997, fashion designer Gianni Versace was shot and killed. His alleged murderer's killings have been described in the press and by some criminologists as a "spree," while the FBI classifies him as a serial killer. So what's the difference?

For the many male serial killers you can no doubt name off the top of your head—Jeffrey Dahmer, John Wayne Gacy, Ted Bundy, Jack the Ripper—there are likely far fewer females of the genre that come to mind. Meet four female murders whose stories you won't forget.

Ted Bundy was one of the most prolific and notorious serial killers in U.S. history—he confessed to murdering at least 36 women, but some estimates put the number of victims as high as 100. But despite his infamy, many people find him to be one of the most physically attractive and charismatic murderers.