Shifting into a sitting position, Harry groaned and mentally face-palmed.
In hindsight, the situation with Quirrell was a lot like those cloak-and-dagger novels, very the-butler-did-it-esque. Harry wasn't sure how he had missed it; hadn't he read all those who-dun-its while hiding out in the library from Dudley? He should have known; it was always the guy everyone else dismisses. Things had been going story-book since the Hogwarts letters came, it would logically follow that his 'bad-guy' would follow the script.
"No doubt you expected Severus," Quirrell laughed. "He does seem the type, doesn't he? So useful to have him swooping around like an overgrown bat. Next to him, who would suspect p-p-poor, st-stuttering P-Professor Quirrell?"
Anyone who's ever read a book intended for audiences that think beyond face-value, that's who. Snape's too blunt in his disposition to be the true villain, he was too obvious. If they were casting roles, he had the makings of a reoccurring antagonist since he was a big part of daily interaction. The real baddies were the ones that stayed to the sidelines.
So why hadn't Harry realised that until just now?
Well, maybe Harry was being hard on himself; if the situation truly followed the script, the villain would be Filch, or maybe even Hagrid. They would have suited the 'butler' role more properly, and it wasn't like Filch needed an excuse. Hell, Madam Pince would have been perfect. If everyone were to be placed in roles, Snape would have been the main suspect, the crime would have actually been committed by Professor Sprout in the Dark Tower with a riding crop, and Quirrell would have been that wimpy bloke that panics and end up being the next victim after he stupidly runs off by himself.
In any case, it appeared that the wimpy bloke was actually the murderer this time around, and Harry — the protagonist, the one that should have been catching the villain red-handed — was starring in the role of damsel in distress. Sod it all if he hadn't bollixed up his own fight scene.
In a story with a plot-twist that could have been seen a mile coming, Harry Potter is: The Boy Who Lived to be an Idiot. Coming soon to a theatre near you.