Harry went back to work the next day. He found nothing interesting. That's what he told Professor Teo. 'Are you certain,Harry?' asked the professor.' Whoever buried this man was afraid of him, that's for sure. His body was covered in pieces of paper with words on them. Words which were meant to keep harm away. Strange.' Harry thought about the whistle. It was still in his pocket. ' I am certain, Professor,' said Harry. ' I found nothing unusual. Nothing at all.'