The team said the strange orb that appeared in their footage could be the ghost of Richard Canton, the Lord Mayor of Liverpool, who died in 1926. The investigators said Canton made contact with them by setting off alarms on their equipment.

The Scottish National Trust said cameras set up to observe a family of swallows at Drum Castle instead recorded a "strange mist" some have identified as a ghost said to live in the 700-year-old facility.

"Everyone tells me that Drum Castle is a haunted place and that there are strange happenings here," said Alison Burke, the National Trust for Scotland's property manager for Drum Castle. I have always been highly skeptical but there have been too many inexplicable events that cannot be ignored.

Britain's Chiltern Railways decided to get proactive about its ghost problem after several complaints of spooky goings-on and hired Nick Rees to serve as a "supernatural liaison officer."

Rees has been charged with following up on reported ghost sightings at the station, which one security guard described as "one of the most haunted places I have been to."

The Ohio homeowners whose property hosts a drain tunnel branded "Satan's Hollow" by enthusiasts may want to look into hiring their own supernatural liaison officer to protect the property -- and any potential supernatural residents -- from amateur ghost hunters.

Police said they are called to the Blue Ash property a couple of times per year to remove ghost hunters who don't have permission to explore the tunnel, which has been described as a "doorway to hell."

Ghost hunter David Scott, who shot footage inside "Satan's Hollow," described it as one of the scariest locations I have ever investigated.

Many experts have brushed aside the alleged ghost sightings, saying witnesses and those who view pictures and video purporting to show spirits are experiencing nothing more supernatural than the power of suggestion.

Copyright 2014 by United Press International