A spider took up residence in my conservatory several months ago. It’s not enormous, half an inch in diameter, but I hate spiders. Winter loomed. Those were days of dread. A seasonal terror gnaws at people who live at northern latitudes as the sun sets incrementally sooner. Here in Cornwall, the exact time of sunset means little when clouds and rain can make it night-ish at three. Having a spider suspended overhead by the door, just over my clothes-drying rack, doesn’t help when my inside...