Do you believe in ghosts? You’re not alone. Mississippi is home to at least 10 paranormal research groups made up of people who definitely do — and they’re part of a much larger trend.

Across the U.S. and U.K., more than 300 groups are actively investigating unexplained phenomena, often inspired by popular television shows like “Ghost Hunters,” “Medium,” “Ghost Whisperer,” and “Haunting Evidence.”