Can someone harm another person remotely using exclusively psychic means? Can a place emit harmful influences towards the human environment? Are there human, semi-human, or non-human entities that can affect us, consciously or unconsciously? What are the characteristics and symptoms of a psychic attack and how do they differ from those of a common psychological or pathological problem? And above all, how does one defend and confront a psychic attack or negative influence directed against them? All the questions and answers regarding the techniques and methods of defense in a psychic attack. "Psychic Self-Defense" is a classic work in its genre... The unusual material and the serious, documented way in which it is presented make Dion Fortune almost unique among occult authors. Even a skeptic is obliged to admit that she writes as if she knows very well what she is talking about...