Ambrose Bierce: Beyond the Wall
“Beyond the Wall” is a short story by Ambrose Bierce, published in December 1907 in Cosmopolitan magazine. The story begins with a man visiting his old friend Mohun Dampier on a stormy night in San Francisco. Upon arriving at the gloomy and lonely house where Dampier lives, the visitor realizes that his old companion has undergone disturbing changes. In the dim light of a tower battered by wind and rain, a knock on the wall arouses his curiosity. Intrigued, he listens intently to his friend’s story, which reveals a painful memory related to that mysterious signal.