This eBook edition of "Powers of Darkness" has been formatted to the highest digital standards and adjusted for readability on all devices. Excerpt: "It was as if Martin Faber had come back from the dead—the ghastliness of the idea made Alice shudder. A sudden fear set her trembling from head to foot. She seemed to see the whole mystery laid bare as one sees things in a dream, only to lose sight of them again. Yet Martin Faber was in his grave. It was impossible in the circumstances." Frederick White (1859–1935), mostly known for mysteries, is considered also as one of the pioneers of the spy story.