- Luna is chasing Harry. He doesn't want to listen, but she insists she knows how to help him.
- If Harry is going after the diadem, she thinks they need to talk to a ghost to figure out where it's located.
- Luna leads him to the ghost of the Grey Lady (she's Ravenclaw's resident ghost), and then leaves him—she thinks it's better if they talk alone.
- The Grey Lady is a little prickly, but Harry manages to ingratiate himself.
- He calls her Helena, realizing that she's the (ghost) daughter of Rowena Ravenclaw. She says she can't tell him anything…at first.