A mysterious experiment, a haunting transformation, and a terror that reaches across generations-The Great God Pan stands as one of the most unsettling and influential works of supernatural fiction ever written. Arthur Machen blends psychological horror, mythic dread, and gothic atmosphere to tell the story of a scientific attempt to pierce the veil between the human world and an ancient, forbidden power. What begins as a strange medical procedure unfolds into a series of eerie events, whispered rumors, and shocking revelations that leave investigators-and readers-grappling with the limits of understanding and the dangers of awakening forces beyond control. This restored edition preserves the haunting language and mounting tension of Machen's original text while offering a clean, modern reading experience. Long celebrated by authors and critics for its profound impact on horror literature, the novella continues to disturb, fascinate, and inspire. Praised by figures such as H. P. Lovecraft and Stephen King, this story remains essential reading for fans of dark fiction and supernatural mystery. Enter the shadowed doorway between worlds-add this enduring classic of horror to your library today.