Why didn't a fictional detective become as famous as Holmes and Poirot?
Christie and Conan Doyle's detectives are known by most people around the world. Why couldn't a fictional detective achieve such a fame as these 2? Murder mysteries are one of the most popular genres. Is the thriller genre so sauturated that no one is able to distinguish themselves as the next king/queen of crime?
And is no modern detective cool enough to have the same fame as the big 2?