For as long as human history has been recorded, people have been fascinated by their dreams. From the mystical visions in the Bible to Freud, Jung and beyond, we have looked for the meaning and significance of dreams and tried to find the connection between our waking and sleeping thoughts. But how much do we really know about them, and what can they teach us? In this remarkable exploration of the mysterious world of dreams, Peter and Elizabeth Fenwick gather the latest research to show that by learning how to read the messages our dreams give, we can understand ourselves more fully. They examine the purpose of dreams, demonstrating how they can be experienced on different levels - sometimes simply mirroring fragments of our lives and at other times revealing aspects of personality, giving us emotional insights and helping us to solve problems. The Fenwicks also explore the fascinating territory of psi phenomena, such as telepathy and precognition, and its relationship to dreaming. Dreams may be the setting, too, for even more extraordinary occurrences, such as out-of-body experiences or the terror of night abductions by alien visitors. The authors show us how to gain access to the state of lucid dreaming, so that we can learn to direct our own dreams, going through the hidden door to enter a world of virtual reality where anything is possible. But dreams have a darker side, too; nightmares and terrors can make our sleep uneasy, and in their aftermath even murder has been committed. From the principle behind 'dream machines' to bizarre occurrences of shared dreams, The Hidden Door is an intriguing and revealing exploration of the strange world of our subconscious. Including many never-before-published accounts of bizarre dream experiences from the authors' own research, it provides compelling answers to the questions we all ask ourselves about our sleeping mind.