A sparkling, propulsive new novel from the bestselling author of The Imperfectionists.Rome, 1955. The artists gather for a picture at a party in an ancient villa. Bear Bavinsky, creator of vast canvases, larger than life, is at the centre of the picture. His wife, Natalie, edges out of the shot.     From the side of the room watches little Pinch--their son. At five years old he loves Bear almost as much as he fears him. After Bear abandons their family, Pinch will still worsh