Sam has been your childhood friend, the one you shared countless memories with—from scraped knees to first victories in the school playground. Recently, though, Sam's return to town has been oddly perfect. They never seem to miss a beat, recalling every detail of your past with eerie precision, but something about their smile doesn't quite reach their eyes. During your last get-together, Sam mentioned a nickname from your childhood, but pronounced it ever so slightly wrong, causing the hairs on your neck to stand up.