Rudyard Kipling once wrote that "the female of the species must be deadlier than the male." We sometimes forget this as we delve into the world of serial killers, sin, and the supernatural, but we shouldn't. Women are just as deadly -- and perhaps, as Kipling said, even deadlier - as men.

Rudyard Kipling once wrote that "the female of the species must be deadlier than the male." We sometimes forget this as we delve into the world of serial killers, sin, and the supernatural, but we shouldn't. Women are just as deadly -- and perhaps, as Kipling said, even deadlier - as men.

From "angels of mercy" to women who kill for money, love, and revenge, the so-called "fairer sex" has claimed more than its share of victims throughout American history. There have been many women who have caused troubled ghosts to remain behind. They are serial murderers, madwomen, and vengeful lovers who still demand attention long after their bodies have been consigned to the grave. They are also lingering spirits - reminders that their lives were snuffed out as victims of murder and depravity who refuse to leave this world behind.