after a quick google search of the word "Sherlock" we are instantly provided with around 22,000,000 results, the first of which takes us straight to Sherlock page on the BBC One website.
The page looks typical of any tv promo page, boasting galleries of images, preview clips, biographies and latest news. What's special about this page, is the link in the middle of the page, directing us to the 'Interactive Trailer'
Initially it plays just like any other trailer, and shows us snippets of what we can expect to see in the new series.