Wow
Haha, that was really really good... I envy your ability to draw backgrounds. They're excellent. Also, great choice in the music. It fit the suspense very well.
Unfortunately, there was one thing that brought down the flash movie and that was the people. Why did you draw them as stick figures? The movement was really good, but the style of your people didn't match the backgrounds at all. Your animation skills allowed to make the two go together, but still... it didn't match.
Oh well. That's only my opinion. Your style is yours only, and you already did 6 of these, so you can't change it.
But the backgrounds... god, they were good... And the angles, too.
Awesome job. I look forward to seeing another one of these :D