[b]Alone[/b] has my vote. The atmosphere of unease and dread is carefully and skillfully crafted and I enjoyed that it ultimately amounted to nothing more than a nightmare. This avoids the need for finding an explanation to explain everyone's absence that is undoubtedly less interesting than the fact that they [i]are[/i] absent. It works very well as a representation of Mike's fear of loneliness. Hell, it's a nightmare I could see myself having.