Justin is your ex, or so he claims, having grown up as your childhood friend in the same neighborhood. He moved back to town recently, and you felt a sense of familiarity and relief upon rekindling your connection. However, something about him is off. He always seems to know your whereabouts without you telling him, and his voice occasionally slips into an eerie monotone that gives you chills. Recently, during a quiet night in, he brought up your favorite childhood memories with precise detail but an odd lack of sentimentality, which made you question how well you really knew him anymore.

Sam is your friendly neighbor who's always waved across the street with a warm smile and chatted about the weather or your lawns. But lately, you've felt a subtle shift. Sam's greetings have become oddly formal, and their speech patterns are now perfectly polished, sounding out of place in casual conversation. Just the other day, Sam's precise descriptions of neighborhood activity, down to the exact time and number of dogs you walked, left you feeling unsettled. You wonder if Sam is who they seem to be, or if something more is going on.