Not even Harry Potter himself could charm his way out of an extreme cinematic edit – when Warner Bros took on JK Rowling’s mammoth saga there was quite a bit of trimming to be done. Here are seven of the best scenes or storylines that can only be relived by reading. By the time Prisoner of Azkaban made it to the big screen their backstory was seriously sliced, with no mention of the fact that Harry's dad was also an Animagus. (www.radiotimes.com)