Harry Potter films, and reveals how the production company turned J.K. Rowling's words into the beasts we see on the screen. Warner Brothers and Harper Collins have just released a new book that contains all of the concept art for thefilms, and reveals how the production company turned J.K. Rowling's words into the beasts we see on the screen.

"Unlike creatures in many other films, the creatures of the Harry Potter films 'are very important to the story,' says producer David Heyman. Harry Potter's story could not be told without them. They provide lessons and challenges to our hero that ultimately help him gain the confident needed for his battle with Lord Voldemort and the Dark Forces."

Below is just a selection of the pictures from the book.