David Varela is a writer and producer specialising in interactive storytelling. His projects have included 'Sherlock: the Network' (starring Benedict Cumberbatch and Martin Freeman), chart-topping app 'The Trace', and three of the world's biggest Alternate Reality Games: 'Perplex City,' 'Lewis Hamilton: Secret Life' and 'Xi'. He also writes for radio, theatre, film and other less conventional media.