Edgar Wallace (1875–1932) was an English writer, playwright, screenwriter, and journalist. A contemporary of Arthur Conan Doyle, he surpassed in his time the popularity of the creator of none other than Sherlock Holmes himself. Edgar Wallace is one of the best-known English authors of the detective genre.
Terrible things happen in the once-quiet city of Düsseldorf. A ruthless maniac is at work in town. The residents are terrified, and the local police can’t find a single lead to move the investigation off dead center. Perhaps it will be possible after all with a new senior commissioner from Berlin. They say he is a real celebrity—not a man, but a devil with iron nerves, nicknamed by his English colleagues “A Tired Heart”…