Every Halloween, children's thoughts turn to black cats, goblins and ghouls. For most, it is a joyful occasion, a chance to indulge in all things delightfully wicked. From magic potions to witches on broomsticks, the imagery is often lighthearted and playful because Halloween monsters are just make-believe. But tragically, in October of 1954, one little girl discovered that some monsters are real.

One of America's most successful serial killers was Martha Grinder, an Allegheny County woman who rose to notoriety in the years following the Civil War as "The Poisoner of Gray's Alley". What made Martha Grinder so successful in playing her deadly game, aside from the fact that she killed indiscriminately for years before getting caught, was that she appeared beyond reproach-- for Martha was adored by her neighbors and was regarded as one of the kindest-hearted women in the Pittsburgh area.

The historical record shows that 1,043 criminals are known to have been executed in Pennsylvania, beginning with the hanging of Derek Jonson in Bucks County in 1693 and ending with the lethal injection of Philadelphia serial killer Gary Michael Heidnik in 1999. Of these 1,043 persons who paid the ultimate price for their crimes, only one was a clergyman-- Cyriacus Spangenberg.

Two young lovers, killed by a single sniper's bullet. For 99 years, the Lamb's Gap Murders have perplexed law enforcement. Who killed Harry Ganster and Leah Ellenberger in May of 1924? Moonshiners? A jealous ex-lover? Or was it a murder-suicide? At various times, all of these explanations seemed to fit. The problem, however, is that none of these explanations fit perfectly.

With Guest Host Ashley Bemis. In April of 1875, the most sensational murder trial in the history of Fulton County took place. Charged with one of the most shocking crimes imaginable were Mary Mellott and her husband Daniel, a Civil War veteran who was known throughout Buck Valley as "Wolf Dan" on account of his disfigured face.

The McKean County township of Wetmore once boasted an architectural gem of a mansion with a dark and mysterious past. Rumored to the inhabited by maleficent spirits, the "Haunted House of Wetmore", as it was known to folks in Kane and surrounding towns, was erected in the early 20th century by a businessman who had something of a fire problem-- that is to say that every building he owned was destroyed by a bizarre series of fires over a period of several decades for which there was no discernible cause.

Stranger still, several family members of the man for whom the mansion was built died under strange circumstances, leading many to believe that the family of Thomas Keelor had been cursed by someone-- or something.

In the backwoods of Cumberland County live some of the kindest, gentlest souls you could imagine; decent, God-fearing folks who'd gladly give you the shirt off their own back or drive you into town if you should happen to run out of gas on a lonesome country road. But the backwoods of Cumberland County have also been the home to some of the most depraved and reprehensible folks who ever trod God's green earth. One example is John Gampher, who, in the late 19th century, pulled off one of the most diabolical stunts in the annals of

In 1911, witchcraft hysteria spread across central Pennsylvania, with dozens of superstitious citizens swearing out complaints against men and women accused of being hex or "pow-wow" doctors, but one bizarre story of Schuylkill County made newspaper headlines across the commonwealth. Alleging that her father, Howell Thomas of Tumbling Run, died as the result of a hex placed upon him, Mary Isabelle Thomas went to the press with a long list of peculiar incidents which she believed would prove that her father succumbed to the effects of black magic. Mary claimed these mishaps began immediately after a black cat showed up on the Thomas farm-- a cat that assumed monstrous proportions, growing to four feet in height before magically returning to its previous form.

In 1862, the residents of Providence Township in Lackawanna County decided to establish a poor farm for those who were impoverished,

As with any asylum with such a long history, the Hillside Home has seen some dark moments, including several violent inmate deaths at the hands of staff members, but none so tragic as the brutal murder of two female inmates in the summer of 1906 by a deranged mute named Ignatz Krewzyk.

In March of 1928, William Ward and his young wife, Catherine Ward, occupied the second floor of a Pittsburgh duplex with their two children, three-year-old Billy and eight-month-old Dorothy Mae. Once, the Wards had a been a happy family with all-American dreams of white picket fences and a garage to park their car. But everything changed one cold, dreary Thursday morning in March.