Harry Potter and the Half-Blood Prince (2009)

Director : David Yates
Writers : Steve Kloves (screenplay) J.K. Rowling (novel)
Cast:
Daniel Radcliffe
Emma Watson
Rupert Grint
Michael Gambon
Alan Rickman
Helena Bonham Carter
Jim Broadbent
Robbie Coltrane
Timothy Spall
David Thewlis
Maggie Smith
Julie Walters
Mark Williams
Tom Felton
Release Date: 15 July 2009 (USA)
Tagline: Once again I must ask too much of you, Harry

Plot: As Harry Potter begins his 6th year at Hogwarts School of Witchcraft and Wizardry, he discovers an old book marked mysteriously "This book is the property of the Half-Blood Prince" and begins to learn more about Lord Voldemort's dark past.

(source: imdb.com)