Harry Potter and the Half-Blood Prince

Death Eaters attack London. Dumbledore talks Professor Horace Slughorn into returning, and Harry becomes a Potions star thanks to an old textbook annotated by the "Half-Blood Prince." Draco Malfoy gets a mission from Voldemort, and Snape makes an Unbreakable Vow with Narcissa to protect him. In private lessons with Dumbledore, Harry sees Tom Riddle's past and gets Slughorn's true memory: Voldemort split his soul into Horcruxes. Harry and Dumbledore go after a locket in a cave, and Dumbledore comes back very weak. On the Astronomy Tower, Draco disarms him and Snape kills Dumbledore, then reveals he's the Half-Blood Prince. The locket is a fake, with a note from someone called R.A.B. Harry decides not to go back to school.

1. CameoRalph Fiennes's nephew

   The 11-year-old Tom Riddle at the orphanage is played by Hero Fiennes Tiffin, nephew of Ralph Fiennes, who plays Voldemort.

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2. Behind the scenesAn Oscar nod for cinematography

   Bruno Delbonnel was nominated for the Best Cinematography Oscar for this film's moody, gray look.

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3. Behind the scenesThe burning Burrow, film only

   Bellatrix and Greyback's Christmas attack on the Burrow was created for the film. David Yates wanted to inject some danger into the story.

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4. SetupWho is R.A.B.?

   The locket from the cave is a fake, with a note signed by someone called R.A.B. The film doesn't say who that is. It's saved for later.

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