How much do you know about Moaning Myrtle?
You'll recall: the weepy ghost who lived in the girls' bathroom at Hogwarts and was unpopular with every creature in the school, including the ghosts.
But do you know why she is sad? Why did she cry for a long time in the bathroom on the second floor? What had she experienced while she was alive? Did she ever love anyone?
This is a story about Moaning Myrtle, let me tell you.