‘Now, pay attention,’ said Dumbledore, speaking very low, and very clearly. ‘Sirius is locked in Professor Flitwick’s office on the seventh floor. Thirteenth window from the right of the West Tower. If all goes well, you will be able to save more than one innocent life tonight. But remember this, both of you. You must not be seen. Miss Granger, you know the law – you know what is at stake … you – must – not – be – seen.’
