Colin Wilson and his son Damon have compiled a lot of unsolved mysteries for this rather thick tome on the unknown. Everything from Sasquatch to UFOs are covered in this book. At over 600 pages, there is something for everyone. Originally written in the early 1980s, this book has been updated by Mr Wilson, with some mysteries having more information and others being solved. Well researched, this is one book that is great for referencing the many subjects of paranormal and strange phenomena, as well as well known mysteries of our time.