Reports of paranormal experiences—events and situations seemingly beyond scientific explanation—vary tremendously, but are often associated with ghosts, haunted houses, and otherwise eerie circumstances. There exist both classic and modern texts on ghosts and haunted or possessed people, places and spaces; many of them offer discussions of traditional ideas regarding such phenomena or utilize now-outdated research in highly academic and technical ways. A very different approach is offered here in easily understood reviews provided by a leading-edge research program devoted to increasing the understanding of who has ghostly experiences and why. With new insights both global in scale and multidisciplinary in scope, this collaboration by multiple researchers uncovers consistent evidence that anomalous experiences represent a very real “Haunted People Syndrome”—a term describing anomalous experiences that manifest recurrently to the same percipients and are interpreted as “ghostly”—with far-reaching implications for future research across academia. Chapters encourage further reading as they simultaneously invite the participation of new citizen scientists (the field investigators and researchers among us) in furthering the exploration of paranormal mysteries. Photos and figures illustrating concepts and models are included, as is a glossary.