I was recently watching the movie Harry Potter and the Chamber of Secrets. In the beginning you can see Draco Malfoy ripping out a page from a book in the bookstore Flourish and Blotts.
For what reason does he need this page?
I've already heard some theories about helping Hermione and Ron with the basilisk but this sounds sort of implausible.
Could someone please explain this scene to me? AFAIK it has not been told in the books.
Note: I am searching for canon answers such as quotes from J.K. Rowling.