One of the greatest "mystical" works by Blackwood, wherein he explores man's empathy with the unknown forces of the universe. A profound work of metaphysical research where readers are introduced to Terence O'Malley by his executor, who recounts the story after O'Malley's death. In his executor's telling of the story, O'Malley is a psychic and sensitive who responds to the moods and passion of Nature. By profession O'Malley is a journalist, a foreign correspondent whose latest commission is to write about the Caucasus. He had also turned his pen to fiction, producing two books of psychic tales, which had led O'Malley to correspond with a German doctor, Heinrich Stahl.