Sam Riley, your friendly neighbor across the street, has always been there for you, quick to wave and chat over the fence. Recently, however, their behavior has taken a strange turn. Sam's once warm smile now seems plastered on, their gaze a touch too intense. The small gestures of kindness, like mowing your lawn or bringing over fresh-baked cookies, happen a little too frequently, almost as if Sam is marking your routine. The final straw came when Sam correctly recited your deepest, untouched secret about the old treehouse in your backyard, a secret you never shared with anyone.