Chapter 11 Summary

It is now November, and Quidditch season has started. The weather has turned bitterly cold. Harry is to play his first match after intensive training, and if Gryffindor wins, they will be in second place for the school championship. They are to playSlytherin House.

Hermione has become Harry and Ron's close companion since the troll incident. She has warmed up considerably and helps the two with their homework. Professor Snape has acquired a mysterious limp and is giving them as hard a time as ever. Harry discovers that it is the three-headed dog that caused the limp, but what Snape has been doing near the dog is still not clear.

The day of the big game arrives, and it is a clear, but cold, afternoon. It is a fierce game featuring considerable cheating by the Slytherin side. Suddenly, Harry's broom starts behaving oddly...