Elementary has a cast.
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 . His indifference to police procedure often leads to conflict with Captain Thomas Gregson ( Aidan Quinn ) , although the two still remain mutually respectful of one another . 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 .