The Glass Cage by Colin Wilson..A series of brutal and bizarre murders has London on edge. Near the dismembered corpse of each victim, the killer has scrawled cryptic quotations from the eighteenth-century mystic poet William Blake. Baffled, the police enlist the aid of Damon Reade, a brilliant but reclusive Blake scholar, who reluctantly agrees to help. Reade's combination of instinctive deduction and psychic penetration leads him to Gaylord Sundheim,
who may be the murderer. But when Reade befriends Sundheim and becomes convinced he is incapable of having committed the crimes, is he right and Sundheim innocent? Or is Reade falling into a clever psychopath's deadly trap that could make him the next victim?
