Overview:Confidential is on set with David Walliams as he makes his Doctor Who debut. Find out what made writer Toby Whithouse set his latest Doctor adventure in a hotel with a difference and discover how to make heads turn in a room full of ventriloquist dummies. Spend 'A Day in the Life' with the writer on a very revealing set visit when he finally gets face to face with his very own creation, plus more teasers on Death is the Only Answer - an exclusive three-minute Doctor Who episode written by schoolchildren. Featuring interviews with Matt Smith, Karen Gillan, Arthur Darvill and David Walliams.