We speak with Paul Holes, a forensic scientist who helped catch the Golden State Killer, about the havoc wreaked on the life of a homicide investigator.

After a brutal killing spree during the 1980s and 90s, Gary Ridgway pleaded guilty to 49 murders in 2003. We look into who actually survived encounters with the serial killer.

Ron Franscell, author of 'ShadowMan,' speaks with us about the first case in which the profiling technique, often used by the FBI Behavioral Analysis Unit, successfully apprehended a suspect.

Ann Wolbert Burgess tells A&E True Crime about how her expertise in victimology aided the FBI's Behavioral Science Unit in their mission to capture rapists and serial killers in the 1970s and '80s.

The New Hampshire serial killer admitted to killing two men on her farm, but claims it was because God told her to punish pedophiles.

Forensic psychologist, Dr. Katherine Ramsland, tells A&E True Crime about her over a decade-long correspondence with BTK and how she got into the mind of the prolific serial killer.

Since his arrest in 1980, the killer also known as the 'Times Square Torso Ripper' has spent his days at the New Jersey State Prison, where he has since confessed to additional murders.

The non-profit Texas EquuSearch, which helps find missing persons, has sparked a renewed effort to find the remains of possible additional victims of the ‘Candy Man’ serial killer.

Since his incarceration in 2004, for the murders of 71 teenage girls and women, 'Green River Killer' Gary Ridgway has lived a life of isolation at Washington State Penitentiary.

Margaret Press, co-founder of DNA Doe Project, spoke with A&E True Crime about how investigative genetic genealogy helped identify Francis Wayne Alexander as Victim No. 5 of serial killer John Wayne Gacy.