Winter. Bleak. Frosty wind, earth as iron, water as stone, so the old song goes. And now Art’s mother is seeing things. Come to think of it, Art is seeing things himself. When four people, strangers and family, converge on a 15-bedroom house in Cornwall for Christmas, will there be enough room for everyone? Winter. It makes things visible. Ali Smith’s shapeshifting WINTER casts a warm, wise, merry and uncompromising eye over a post-truth era in a story rooted in history and memory and with a taproot deep in the evergreens, art and love.