Luna

'My name is Luna. My older sister is named Astra, and when I was born a few years later, Mum and Dad thought it'd be cute to name their second daughter Luna, you know, both to do with Outer Space. Not that they're bad people, my parents. They were very understanding, even when strange stuff would happen.'

Luna was an ordinary girl, living in an ordinary house with ordinary parents and a particularly ordinary older sister. But what will happen when she receives the Letter? Will her ordinary life ever be ordinary again?