Elementary is a single movie.
Elementary (TV series) . The series was created by Robert Doherty and stars Jonny Lee Miller as Sherlock Holmes and Lucy Liu as Dr. Joan Watson . The series premiered on CBS on September 27 , 2012 . The series also features Holmes ' ongoing conflict with his nemesis Jamie Moriarty ( Natalie Dormer ) . After the premiere , it was picked up for a full season and later an extra two episodes . On March 25 , 2016 , CBS renewed the series for a fifth season , which premiered on October 2 , 2016 .