A behind-the-scenes video from the next installment in the Harry Potter franchise has hit the web, thanks to YouTube. Harry Potter and the Half-Blood Prince doesn't arrive in theatres until November 21, 2008 ... however, you can take a look at some of the filming that has already taken place, along with interviews with the main stars: Daniel Radcliffe, Emma Watson and Rupert Grint.

Click the player below to check out the video!

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In Harry Potter and the Half-Blood Prince, as Harry begins his sixth year at Hogwarts, Lord Voldemort wreaks havoc throughout Britain, and the pressure to defeat him grows stronger. Using an old Potions book which previously belonged to the "Half-Blood Prince," Harry is able to increase his magical knowledge and prepare for battle. First, however, he must help Dumbledore discover the secret to Voldemort's quest for immortality -- the location of his Horcruxes. But the quest for the Horcruxes and the resulting battle at Hogwarts produce a tragic outcome -- leading Harry to believe he must head out on his own to conquer the Dark Lord.