After a two-year absence Sherlock Series 3 came and went in just two weeks, delivering approximately 221 twists, several psychopaths and even a few new interpretations of the theme tune. In this extended interview with the creators / writers / showrunners behind it all, Steven Moffat and Mark Gatiss, you'll find out how they all made it happen, what didn't make the cut and more details on Charles Augustus Magnussen's antisocial antics.