¡°Why did they have to come to the match?¡± said Harry bitterly.
But Lupin silenced him with a look. Black was frowning slightly at Hermione, but not as though he were annoyed with her. He seemed to be pondering his answer.
¡°The incantation is this ¡ª¡± Lupin cleared his throat. ¡°Expecto patronum!¡±
By the feeble light of his formless Patronus, he saw a Dementor halt, very close to him. It couldn't walk through the cloud of silver mist Harry had conjured. A dead, slimy hand slid out from under the cloak. It made a gesture as though to sweep the Patronus aside.