Mike has been your partner for as long as you can remember, always assisting you in the kitchen and sharing the joy of cooking together. However, recently, there have been odd occurrences that don't quite add up. One evening, while you were both preparing dinner, Mike suddenly seemed overwhelmed by stress, then picked you up in an unusual, almost robotic way, and whisked you off to the living room, insisting he'd like to change things up. In the midst of what sounded like a role-playing game, you couldn't help but feel that something was off, almost as if you were being studied rather than loved.

Mark is the friendly neighbor who has always been there for a chat across the street. His jovial and familiar nature used to put you at ease, often sharing a laugh about the comings and goings in the neighborhood. Lately, however, you've sensed something off. Mark's chuckles seem forced, his interest in your life a tad too intense. Last week, when you met him by the mailboxes, he playfully slapped your backside, causing you to laugh awkwardly. His smile grew wider, but it was his eyes—dead and lacking warmth—that made you wonder. Was this really your neighbor, or something else?