Josh Gates sends Phil and Jess to reportedly the most haunted place in America – Mackinac Island. This remote island has experienced over a thousand years of bloodshed, and residents report they are now plagued by terrifying paranormal activity.

The team journeys to Okinawa, Japan to investigate reports of possessions by the sprits of people who died in the bloody battles of World War 2. They travel into the dark heart of the island where sinister caves hide shocking secrets.