Dion Fortune was a British occultist, ceremonial magician, novelist and author. She was a co-founder of the Fraternity of the Inner Light, an occult organisation that promoted philosophies which she claimed had been taught to her by spiritual entities known as the Ascended Masters. A prolific writer, she produced a large number of articles and books on her occult ideas and also authored seven novels, several of which expound occult themes.

The occult is a category of esoteric or supernatural beliefs and practices which generally fall outside the scope of organized religion and science, encompassing phenomena involving a 'hidden' or 'secret' agency, such as magic and mysticism. It can also refer to supernatural ideas like extra-sensory perception and parapsychology.