These serial killers are far more terrifying than horror movie monsters, as their heinous crimes were very, very real. Their motives varied, some lacking any reason at all. Regardless, they left a trail of death and torture in their wake, targeting men, women, children, and even their own family members. These killers came from various backgrounds, ranging from prominent doctors to penniless drifters.
Brace yourself as we unveil the most treacherous serial killers in American history. Click on if you dare.