If you want to find Harry Potter, you go where Harry Potter lives, and that's in Gryffindor Hall! You head off and somehow make your way into the Hall! Good job! Now, to find Harry. You take three steps into the Hall when a ghost appears before you!

"Who are you?" it asks.

Uh-oh. Better not keep the ghost waiting. What will you say?

• I'm a muggle in search of Harry Potter.
• I'm That-Which-Must-Not-Be-Named.
• I'm a new student at the School and was told to report to Gryffindor Hall.