The titles, which are usually the German language titles of the novels, were intended to evoke the typical image of an Edgar Wallace movie. Most titles mention the villain, like "Der Frosch mit der Maske" (literally "The Frog with the Mask"), "Der Zinker" ("The Squeaker") and "Der Hexer" ("The Ringer"). More abstract titles usually include the words "Rätsel" ("mystery") or "Geheimnis" ("secret"), for example "Das Rätsel der roten Orchidee" ("Secret of the Red Orchid") "Das Rätsel des silbernen Dreiecks" ("The Mystery of the Silver Triangle") and "Das Geheimnis der grünen Stecknadel" ("The Secret of the Green Pin"), while others hint at the location of the story, for example "Der Fälscher von London" ("The Forger of London"), "Der Bucklige von Soho" ("The Hunchback of Soho") and "Die Tote aus der Themse" ("The Dead Girl in the Thames").