It was one of those unremarkable days that blur together — just a quick stop at the grocery store before heading home. I was tired, lost in thought, already planning tomorrow’s errands. Nothing about the moment felt memorable. At the self-checkout, I scanned my items, paid, and started to leave. I barely noticed the woman behind me until she called out, waving a small slip of paper. “You forgot your receipt,” she said with a gentle smile. I thanked her, tucked it into my bag, and went on my way — unaware that her simple gesture carried something far more meaningful.

Hours later, while unpacking groceries, I reached for the receipt to throw it away. That’s when I noticed writing on the back — a quick, uneven scrawl: “Check your back seat.” For a second, my heart skipped. The words didn’t make sense. I stared at them, feeling a jolt of unease. Was it a joke? A warning? My imagination started spinning. Continues…