Harry Potter 6 and the Half-Blood Prince

Direction
David Yates

Starring
Daniel Radcliffe as Harry Potter
Rupert Grint as Ron Weasley
Emma Watson as Hermione Granger
Michael Gambon as Albus Dumbledore
Alan Rickman as Severus Snape
Maggie Smith as Minerva McGonagall
Jim Broadbent as Horace Slughorn
Robbie Coltrane as Rubeus Hagrid
Bonnie Wright as Ginny Weasley
Mark Williams as Arthur Weasley
Julie Walters as Molly Weasley
James Phelps as Fred Weasley
Oliver Phelps as George Weasley

David Thewlis as Remus Lupin
Natalia Tena as Nymphadora Tonks
Helena Bonham Carter as Bellatrix Lestrange
Hero Fiennes-Tiffin as Tom Riddle - Age 11
Frank Dillane as Teenage Tom Riddle
Michael Berendt as Tom Riddle at 18
Tom Felton as Draco Malfoy
Helen McCrory as Narcissa Malfoy

Timothy Spall as Peter Pettigrew
Fiona Shaw as Petunia Dursley
Matthew Lewis as Neville Longbottom
Evanna Lynch as Luna Lovegood
Katie Leung as Cho Chang
Tom Moorcroft as Regulus Black

It's Harry Potter's sixth year at Hogwarts, and his dream of becoming an Auror is closer to realization ever than before as Hogwarts recruits a new teacher. While everybody thought the new teacher, Horace Slughorn, would be teaching Defense Against the Dark Arts, they soon discover that the subject is now being handled by Severus Snape. Slughorn, meanwhile discovers Harry's uncanny talent at potions, thanks to a book that used to belong to a mysterious Half-Blood Prince. Along with his newfound favorite subject, he learns a couple of helpful and dangerous spells.

Hogwarts' headmaster Albus Dumbledore resumes private lessons with Harry who uses the sessions to uncover Voldemort's past, hoping to use this to defeat the Dark Lord.