Top 10 graphic novels for teenagers

Malorie Blackman's has written more than 50 books, including Pig-Heart Boy, Hacker and Whizziwig. She also writes for theatre and TV. Her latest book, Double Cross, the fourth in the award-winning Noughts and Crosses series, has just been published in paperback in the UK.For the Guardian, she named a top ten list of graphic novels for teenagers.Number One on her list:V For Vendetta by Alan Moore