Penn State researcher Marissa A. Harrison wrote in the book Just as Deadly that most female serial killers are medical serial murderers. In fact, about 39% of female serial killers were nurses or ...

The worst female serial killers in history were women triggered by abusive childhoods, untreated mental illness, trauma, greed, or the violence around them. These women preyed on society’s most ...

More than 400 years after her death, the truth about "the Blood Countess," a Hungarian noblewoman alleged to have been the most prolific female serial killer of all time, remains elusive.

Pulitzer Prize-winning author Caroline Fraser's 'Murderland' delves into the lead-crime theory behind the proliferation of serial killers from the Pacific Northwest.