It did not take long, however, for Hermione's feeling of sadness to turn to anger.

  "Harry Potter!" she shouted, confident that even if the toffees were still working, her shrill voice would make itself heard. "Ron Weasley!" Hermione used both boys' full names when she was angry. She was practising, Ron often said, though never within her earshot, to be someone's mum.

  "Yaargh!" shrieked Harry in horror and surprise, spilling butterbeer into his lap and shooting upwards off the bed through Nearly Headless Nick, who was hovering overhead. As it happened, the toffees had worn off.

  "Yaargh!" exclaimed Ron, and fell off the bed onto the floor.

  "Harry Potter, you should be ashamed of yourself," said Hermione, her cheeks burning with anger. "Look at poor Dobby!"

  The boys swivelled to look at the charred form in the fireplace.

  "We're going to have to put some new chestnuts on, aren't we?" said Ron.