Maybe a bit dated, the book is from 1990, inside you'll find everything to know about: poltergeist cases, hairy man beasts, UFOs, spontaneous human combustion (great photo material), close encounters with aliens, monsters in lakes, rivers and seas, spook lights, winged people and other non-humans, USOs, ghostly voices, unexplained objects falling from sky, religious phenomena, invisible assailants. The author also comes up with many great photos and pictures. If you are drawn to unexplained mysteries like a moth to a flame you definitely should pick up this volume. Really recommended!
The authors mastered a great collection of cases in every respect, the interpretation is interesting, too bad that after so many years their grasp on the UFO phenomenon was faulty, like Keel they tended to discounted on the reality of the more material cases. What a shame. The book is excellent though.