- Professor Quirrell bursts into the hall to announce that there's a troll loose in the dungeon.
- Ron and Harry realize that Hermione is in the bathroom, and run to get her just in time to see the troll walking directly into the girl's bathroom.
- And…fight!
- The kids manage to incapacitate the troll before they get killed.
- When the teachers arrive, Hermione makes up a wild tale to keep the boys out of trouble, and Quirrell's left to clean up the mess.