Any fan of Dexter knows that Jennifer Carpenter, who plays the title character's sister, is one heckuva screamer.

She gets to put those talents on full display in Quarantine. Here's the official trailer for that film:

[youtube]http://www.youtube.com/watch?v=KfUAETRhhkw&eurl=http://www.moviefanatic.com/videos/quarantine-movie-trailer/[/youtube]