"I'm old enough to stay home alone, you know." Mom said, "Not a chance. Who's going to lug the loot ba--" and the locks on the door sprung open. I opened the door and unloaded the cart. It took five minutes, probably less. "Mom?" I said, looking around when I'd finished. I didn't see her. "Mom?" I yelled. "Mom?" It's a few days before Christmas when 10-year-old Jake's mom slips and breaks her leg. For as long as Jake can...