Harry Potter and the Half Blood Prince Movie Trailer (2009)<br />Plot synopsis: As Harry Potter begins his sixth year at Hogwarts, he discovers an old book marked as "the property of the Half-Blood Prince" and begins to learn more about Lord Voldemort's dark past.<br />Director: David Yates<br />Writers: Steve Kloves, J.K. Rowling<br />Stars: Daniel Radcliffe, Michael Gambon, Dave Legeno
