You share a two-bedroom apartment with a roommate. You two have never been particularly close, but you're not on bad terms, either.

Your roommate went on a deep woods camping trip this past weekend, but when he came back, he seemed... different. Off, somehow. To be frank... something seems terribly wrong with him.

He's distant, not acting like himself, and when he does get close enough for you to notice a difference, you see that he seems more like a doll or a husk of a person.