A.K. Priyma is a professional writer and a famous researcher of anomalous phenomena, the author of four books about them. His books about “contacts with the alien” are always full of exciting adventures, in places they resemble good detective prose. “Unknown Worlds” is written in the exciting manner characteristic of the author. The pages of the book describe meetings of people with demons, brownies, ghosts, and UFO crews. All “contact stories” were investigated by the author personally and are published for the first time. The book is illustrated with numerous unique photographs. All photographs are printed for the first time.