Many writers make references to Sir Arthur Conan Doyle's famous literary creation, the detective Sherlock Holmes, and these often become embedded within popular culture. While Holmes exists predominantly in the context of Victorian-era London, he has been mentioned in such outre contexts as the 22nd century or hunting aliens or supernatural enemies. These references are in addition to the innumerable passing references to Sherlock Holmes made in many literary and cinematic works, such as the labeling of a person as a "Sherlock", whether in reference to their intelligence (or in jest or sarcasm).