Matt Baker and Alex Jones are joined by Downton creator Julian Fellowes and EastEnders star Nina Wadia. Matt Allwright goes behind-the-cenes of the real life Downton and Miranda Krestovnikoff tells the story of a wildlife photographer turned detective. Plus, three young inventors reveal their creations as Michael Mosley talks about new series The Genius of Invention, plus a live link-up with the Winterwatch team.