Harry Potter and the Half Blood Prince Trailer

http://bit.ly/n9Lwcz As Voldemort tightens his grip on the Muggle and wizarding worlds, Hogwarts is no longer the safe place it once was. In 'Harry Potter and the Half Blood Prince', the dangers are no longer outside, they are within the castle itself -- and Dumbledore is determined on preparing Harry Potter for the final battle that is fast approaching.