Singer follows two very different women as they learn to recognize clues by which the invisible world reveals itself to human understanding: dreams and fantasies, visionary experiences, human interactions, and through the depths of solitude. She reveals how the invisible world is viewed objectively by the physical and biological sciences, traditional and gnostic spiritual disciplines, and the psychology of the unconscious. She then suggests how to integrate the visible and invisible in our lives.

June Singer is best known for her classic work Boundaries of the Soul, which has been a major influence in popularizing Jung's work. Her other books include: Modern Woman in Search of Soul, Androgyny, and Blake, Jung, and the Collective Unconscious. A Zurich-trained Jungian psychoanalyst, member of the C. G. Jung Institute of San Francisco and founding member of the Chicago Institute, June Singer lives in Cleveland, where she maintains a private practice in Jungian analysis and transpersonal psychotherapy.