In 1817, it began as a disembodied voice before eventually manifesting into numerous entities and showing her power through horrifying encounters. The Bell Witch has since become a folk legend.

Paranormal witnesses recount terrifying true tales of violent hauntings that have plagued their nightmares since childhood.

Most accounts of UFO sightings can be explained by and attributed to normal earthly phenomena. Those that cannot be solved, however, have police investigators, government officials and researchers puzzled, even decades later in some cases.

Doctors, nurses and patients give first-hand accounts of encounters with patients who have returned from the dead.

A collection of standout videos from season one, showcasing the most chilling and unexplainable paranormal activity footage captured by eyewitnesses.