Claim: Elementary has a cast.

Elementary is an American procedural drama series that presents a contemporary update of Sir Arthur Conan Doyle 's character Sherlock Holmes . 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 is set and filmed primarily in New York City .   The show follows Holmes , a recovering drug addict and former consultant to Scotland Yard , as he assists the New York City Police Department in solving crimes . His indifference to police procedure often leads to conflict with Captain Thomas Gregson -LRB- Aidan Quinn -RRB- , although the two still remain mutually respectful of one another . He is accompanied by Dr. Joan Watson -LRB- Lucy Liu -RRB- , who initially acts as his sober companion . She is a former surgeon and was hired by Sherlock 's father to help him in his rehabilitation . They eventually begin to work together on his cases , and she becomes Holmes ' apprentice . The series also features Holmes ' ongoing conflict with his nemesis Jamie Moriarty -LRB- Natalie Dormer -RRB- . Other supporting roles include Jon Michael Hill as Detective Marcus Bell , Rhys Ifans as Sherlock 's brother , Mycroft Holmes , and John Noble as Sherlock 's father , Morland Holmes .   Before the series premiered , it was met with some criticism given it followed closely on the heels of the BBC 's modern adaptation Sherlock . After the premiere , it was picked up for a full season and later an extra two episodes . The season two premiere was partly filmed on location in London . The series has since been well received by critics , who have praised the performances , writing , and novel approach to the source material . On March 25 , 2016 , CBS renewed the series for a fifth season , which premiered on October 2 , 2016 . On May 13 , 2017 , CBS renewed the series for a sixth season .