"The Gardener Estate is one of the most storied and beloved places on the West Coast: a magnificent house in vast formal grounds, home to a family that shaped California-and fought hard to conceal the turmoil and eccentricities within their walls. And now, just as the turmoil seems buried and the Estate prepares to move into a new future, construction work unearths a grim relic of the estate's history: a skull, hidden away some fifty years ago. Inspector...