So in the movies, the hero reaches up, twists the villain's neck (usually some hapless sentry) and the villain falls, stone dead. Now, of course, it's not as easy as this. But what I'm wondering is, would a neck break kill you? I know one guy who broke his neck diving off a dock (hit a rock- ugh). He was paralyzed, but not dead. If you broke someones neck, wouldn't you end up with a screaming, writhing mess?
Kinda a ghastly question, but appropriate.

Thanks