GHI visits a German fortress whose chambers are haunted by the spirit of a beheaded 13th Century nobleman. Then it's all off to Slovakia, where the team separates legends from facts in the dark halls of Orava Castle.

Macabre rumors of witchcraft, wandering spirits and grave-robbing give GHI and special guest investigator Josh Gates of "Destination Truth" plenty to dig into at the real Frankenstein's Castle in Germany.

In this episode, the team makes their way to what many believe is the most haunted site in New Zealand, Larnach Castle.