Mark Gatiss, Polly Walker and Connor Finch spill the secrets behind Bookish series 3 - from seances and supernatural mysteries to lying, sleuthing and the props that helped them become their characters.
Mark reveals how his childhood observation skills helped with roles like Sherlock. Polly puts her detective skills to the test on her own children and Connor has one very important secret weapon... his boots!
Interview by Karimah Bangura Report by Jonesl. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
