In this week's Book Club podcast, we're celebrating 50 years of a unique classic – Richard Adams's Watership Down – and its forthcoming adaptation in graphic novel form. I'm joined by Richard Adams's two daughters Juliet and Rosamund, who tell me how a story that their dad started telling them to beguile a long car journey became one of the best selling children's books of all time, how that changed their father's life, and how Fiver's prophesy, alas, is finally coming true.