Experts speak with A&E True Crime to clear up common myths around serial killers.

Dr. Marissa Harrison, an evolutionary psychologist and author, speaks to us about her research on female serial killers and how she was impacted by victims' stories.

True-crime author Harold Schechter, author of 'Hell's Princess: The Mystery of Belle Gunness, Butcher of Men,' on what made serial killer Belle Gunness unique and if she tricked everyone into believing she died.

Why was Borden acquitted so quickly? And is there any relationship between Borden's rumored crimes and the homicides of other famed Victorian-era female killers like Belle Gunness?

By the time the murderess's crimes were discovered at her burnt-out pig farm in 1908, her tally of victims had risen to at least 12, and possibly as high as 40.