The story follows Harry’s sixth year at Hogwarts as he discovers a mysterious potion book owned by the "Half-Blood Prince" and works with Professor Dumbledore to uncover the secret of Voldemort's Horcruxes.
With the Fantastic Beasts series faltering at the box office and the upcoming HBO reboot facing skepticism, Warner Bros. needs a surefire win. Releasing a "Director's Cut" of Half-Blood Prince (and potentially Order of the Phoenix and Goblet of Fire ) would require minimal new CGI spending—just editing and scoring existing footage. harry potter and the half blood prince new full film