A "useful feature" of the Sherlock episode "[S3E2] The Sign of Three " is its , specifically the dramatically new way it represents Sherlock Holmes's deduction process .
: Strategic use of split screens to manage multiple timelines and perspectives during the wedding and the flashbacks to unsolved cases. [S3E2] The Sign of Three
: A beautiful, fresh introductory shot of the famous 221B Baker Street. A "useful feature" of the Sherlock episode "[S3E2]