Harry Potter and the Half-Blood Prince (2009)

Trivia: Young Tom Riddle is played by newcomer Hero Fiennes-Tiffin, who is the nephew of Ralph Fiennes, the actor who plays Lord Voldemort, aka Tom Riddle.

Super Grover

Trivia: Marcus Belby actor Robert Knox was stabbed to death outside a pub in England shortly after completing principal photography. He died protecting his brother during a fight, and the killer was convicted in 2009 and sentenced to a life term in prison.

Trivia: When Harry and Ginny are in the Room of Requirement hiding the Half-Blood Prince's potions book, you can see the White Queen from the chess game of the first movie among all the stuff kept in that room.

Trivia: Christian Coulson, who played Tom Riddle in the second film, expressed interest in returning for this film, but David Yates felt Coulson was too old to convincingly play the role again. Ironically, Coulson was "too old" to begin with, being almost ten years older than the age group Chris Columbus had set for auditions.

Trivia: In the Room of Requirement, opposite the Vanishing Cabinet, stands the bewitched harp from Fluffy's chamber in Harry Potter and the Philosopher's Stone , which was used by Professor Quirrell to put the three-headed dog to sleep over the trap door.

Super Grover

Trivia: The scene where Harry and Ron are taking the Hogwarts Express back home was actually filmed in Norway.

Trivia: The final model of Aragog that they slid into the grave weighed about 3 quarters of a ton.