Most of us enjoy a good bone-tingling scare. As a whole, we spend millions of dollars each year trying to satisfy our darker side. We like our horror movies, can’t wait to get on death-defying rides, and we spend countless hours reading the latest thrillers. But what about real paranormal encounters? Could they be more commonplace than we tend to think? Lisa Rogers, author of On Haunted Ground, poses the theory that, for better or worse, we all may be a little more haunted than we think.