Orrin Grey

He claimed more than 24 victims ... but it was his method of murder that earned Haarmann his ghoulish moniker.

Haunting its crumbling corridors are reports of disembodied screams, shadow people, and the restless souls of tortured prisoners of war.

Inside a modest West Virginia museum are the mummified remains of two insane asylum inmates.

Did Polish crime writer Krystian Bala commit murder and hide clues in his book Amok?

They say she drifts among the tombstones in her diaphanous gown, searching for her dead son...

Their corpses were dressed in matching suits with homemade lead masks draped over their eyes...

Lurking within this man of medicine was a ruthless killer who lured dozens of victims to their doom.

On the outskirts of town lies a haunting remnant of Colchester's past...

One of these men might have committed one of the grisliest murders in American history.

Haunting this Cleveland mansion are tales of secret passages, brutal murder, and restless spirits lingering in its halls.

This bronze monument to tragedy is said to bring death to anyone who touches it.

On a summer night in Georgia, a killer crept into the DeFoor family homestead and slaughtered them with an axe.

There have been several Night Stalkers over the years . . . but few were as chilling as the first.

John Christie was hanged for the murder of his wife ... but she was just one of his victims.

Everyone's got secrets, but few have double lives as shocking, daring, or strange as the ones listed here.

Four men were arrested for his crimes, but the real Monster is still at large.

Tucked away in central Italy is a mysterious garden that haunts the dreams and nightmares of its visitors ...

By the time he was finally caught, this serial killer had claimed more than a dozen victims.

In Australia's infamous, now-abandoned institution, physical punishment was replaced with psychological torture.

These killer clown movies are no laughing matter.