Winter'A warm hug of a book like sitting by a roaring winter fire' JACKIE KAY Winter is the time to snuggle indoors without guilt; to curl up on the sofa with a good book or a box set, a hot drink or a wee whisky to hand. Val McDermid has always had a soft spot for winter: the bitter clarity of a crisp cold day, the vivid skies over the Firth of Forth, the crunch of frost on fallen leaves and the chance to be enveloped in big jumpers and thick socks. In