In this spiritual coming-of-age memoir, Jim Gilkeson takes the reader on a storyteller's journey into three now non-existent subcultures of spiritual and social experimentation in the U.S. and Northern Europe. Told in a series of short interlocking vignettes spanning the years from 1949 to 2015, Gilkeson traces his unlikely path from his conventional upbringing in the Midwest, down the psychedelic rabbit hole of the late 1960s, to his years as a brother in an order of modern mystics and a practitioner and teacher of energy healing at a clothing-optional retreat center.

Three Lost Worlds: A Memoir of a life Among Mystics, Healers, and Life-Artists is an insider's account of life in the Holy Order of MANS, an esoteric spiritual order founded in San Francisco in the 1960s; an apprenticeship in energy healing with an Irish clairvoyant, the late Bob Moore; and a fourteen-year stint as a healer at Harbin Hot Springs in Northern California, which comes to an abrupt and devastating end in the wildfires of 2015.

Three Lost Worlds is set in part against the backdrop of cults and the paranoia surrounding them in the wake of the Jonestown mass suicides in the late 1970s, but it tells a different kind of story, one of spiritual and personal growth through the eyes of an insider. In the process, Three Lost Worlds offers the reader a reflection on an era in American spiritual history, the heartfelt journey of a modern spiritual seeker.