Unlike previous episodes, this installment uses to immerse the audience in Sherlock's mind during his best man speech. Key visual features include:
: A more complex and abstract representation of Sherlock's internal logic, often referred to as "Sherlock-vision". [S3E2] The Sign of Three
: Strategic use of split screens to manage multiple timelines and perspectives during the wedding and the flashbacks to unsolved cases. Unlike previous episodes, this installment uses to immerse