CONTENTS: Introduction. What hath light wrought? / by Isaac Asimov Visitation. The midnight embrace / by Matthew Lewis The Frankenstein theme. The transformation / by Mary Shelley Dream state. The bold dragoon / by Washington Irving Drug addiction. Levana and our ladies of sorrow / by Thomas de Quincey Sorcery. The magician / by Lord Lytton Morphia influence. [Berenice](https://openlibrary. org/works/OL15645808W) / by Edgar Allan Poe Schizophrenia. The drunkard's dream / by Joseph Sheridan Le Fanu Claustrophobia. The man in the reservoir / by C. F. Hoffman The blood drinker. Haceldama / by Lafcadio Hearn Hallucination. The ensouled violin / by Madame Blavatsky Morbidity. Visions of the night / by Ambrose Bierce The legendary dream. The soldier's rest / by Arthur Machen A trauma of war. The bureau d'échange de Maux / by Lord Dunsany Psychic experience. The silver mirror / by Sir Arthur Conan Doyle The occultist. The testament of Magdalen Blair / by Aleister Crowley Visionary. A dream of Armageddon / by H. G. Wells Ghostly visitation. A school story / by M. R. James Obsession. The grimoire / by Montague Summers Recluse. The evil clergyman / by H. P. Lovecraft Nightmare. The slayers and the slain / by August Derleth Fear of illness. The shifting growth / by John Gawsworth Arachnophobia. Along came a spider / by Algernon Blackwood Night fantasy. The head hunter / by Robert Bloch A waking dream. The haunting of the new / by Ray Bradbury The future. The curse / by Arthur C. Clarke