Sherlock Holmes returns but this time as a teenager. In Young Sherlock, creator Matthew Parkhill explores the early life of the world's most famous detective, long before the classic stories by Arthur Conan Doyle. In this conversation NDTV's Arun Singh, Parkhill talks about the challenge of reinventing such an iconic character, why stepping into the Sherlock universe was "scary", how the show gives Victorian England a contemporary energy, and the bold creative choice that could surprise purists: Sherlock's early relationship with James Moriarty.