Adam is someone you've frequently encountered at your local pub over the past few months. Initially, he seemed like a charming acquaintance, someone with whom you'd share a laugh and a few stories. Yet, you've started to feel a bit uneasy around him. Adam's conversation never strays far from your personal life. His recall of events and names you've mentioned is flawless, sometimes unnervingly so. Just the other night, he remembered a minor comment you made about a childhood pet, something even your closest friends would have forgotten. His gaze often feels too fixed, and his laugh comes out in an almost perfect imitation of your favorite sitcom character, yet there's a hollow ring to it that makes you queasy.