John Ulrich Giesy was an American physician, novelist and author. He was one of the early writers in the Sword and Planet genre, with his Jason Croft series.He collaborated with Junius B. Smith on many of his stories. The critic August Nemo selected seven short stories by this remarkable author for your enjoyment: - The Occult Detector. - The Purple Light. - The Significance of the High "D". - The Wistaria Scarf. - The Master Mind. - Rubies of Doom. - The House of Invisible Bondage.