In the 1800s, a time before people knew how disease actually spread, it was believed that consumption could only be stopped by making sure the dead were actually dead.

In 19th century Ireland, Michael Cleary is convinced his wife, Bridget, has been replaced by a fairy called a changeling.

In 19th century America, many believe houses are haunted and that the dead can communicate with the living.

In 1589, the villagers of Bedburg, Germany, are convinced that a werewolf is killing women and children.

A child without friends named Robert Gene Otto believes his doll is real, becoming friends with his new companion and calling him Robert.

Two shunned Irish immigrants in Scotland start off as grave robbers to sell the dead to doctors, but they decide that creating their own inventory is much easier and they become the most prolific mass-murdering duo in history.