Sherlock is a single episode.
Sherlock is a crime drama television series based on Sir Arthur Conan Doyle 's Sherlock Holmes detective stories . The show won in three categories at the 66th Primetime Emmy Awards including Outstanding Writing for a Miniseries , Movie or a Dramatic Special for Moffat , Outstanding Lead Actor in a Miniseries or a Movie for Cumberbatch , and Outstanding Supporting Actor in a Miniseries or a Movie for Freeman . The third series has become the UK 's most watched drama series since 2001 while interest in the fourth series appeared to slip by approximately twenty percent .