By now, audiences should be burnt out on horror films that promise that they’re based on true events – after all, whoever heard about this stuff before it hit the big screen? However, Ole Bornedel‘s The Possession actually has a news article to back it up! And one from the Los Angeles Times to boot! Based on the article “Jinx in a Box,” the formerly titled Dibbuk Box centers on a young girl who buys a creepy box at a yard sale, plunders its weird little treasures inside, and finds herself possessed by one angry spirit. The film stars Jeffrey Dean Morgan, Kyra Sedgwick, Madison Davenport and Natasha Calis, and it looks scary as all get-out. Perhaps even scarier than actually going to a yard sale (shudder).

The film’s first trailer is a solid one, and though it comes complete with some standard horror film shots (flying things! gasping! dark shadows! religious figures who cannot help! sudden car accidents!), it also has some nifty surprises and one hell of a final shot. Check it out for yourself, if you’re not too afraid:

The Possession opens on August 31st. [Yahoo! Movies, via /Film]