Alien Encounters: The Secret Behind the UFO Phenomenon by Mark Eastman and Chuck Missler is a trade paperback book published by Koinonia House, Incorporated in 1997. The book delves into the mysterious world of UFOs and extraterrestrials, exploring the secrets behind alien encounters. With a focus on body, mind, and spirit, the authors provide insights into the mysterious phenomenon of UFOs and the potential involvement of angels and spirit guides. The revised edition features 375 pages of intriguing theories and perspectives on the topic.