There was a hitch. By the next morning, Ron's bitten hand had swollen to twice its usual size. He didn't know whether it was safe to go to Madam Pomfrey -- would she recognize a dragon bite? By the afternoon, though, he had no choice. The cut had turned a nasty shade of green. It looked as if Norbert's fangs were poisonous. (scroll down)

Harry and Hermione rushed up to the hospital wing at the end of the day to find Ron in a terrible state in bed.

"It's not just my hand," he whispered, "although that feels like it's about to fall off. Malfoy told Madam Pomfrey he wanted to borrow one of my books so he could come and have a good laugh at me. He kept threatening to tell her what really bit me -- I've told her it was a dog, but I don't think she believes me -- I shouldn't have hit him at the Quidditch match, that's why he's doing this."

Harry and Hermione tried to calm Ron down.

"It'll all be over at midnight on Saturday," said Hermione, but this didn't soothe Ron at all. On the contrary, he sat bolt upright and broke into a sweat.

"Midnight on Saturday!" he said in a hoarse voice. "Oh no oh no -- I've just remembered -- Charlie's letter was in that book Malfoy took, he's going to know we're getting rid of Norbert."

Harry and Hermione didn't get a chance to answer. Madam Pomfrey came over at that moment and made them leave, saying Ron needed sleep.

"It's too late to change the plan now," Harry told Hermione. "We haven't got time to send Charlie another owl, and this could be our only chance to get rid of Norbert. We'll have to risk it. And we have got the invisibility cloak, Malfoy doesn't know about that."