Elfie von Kalckreuth
From the mind of prolific British crime writer Edgar Wallace come two tales of murder and the Scotland Yard sleuths who aim to bring the killers to justice. In The Mad Executioners, the cops must catch a mad scientist who experiments on his own decapitated -- but still-living! -- victims. In Fellowship of the Frog, Scotland Yard and an amateur American detective track down a mysterious masked criminal known as "the Frog."