Autumn has come to Mystery again. The leaves on the trees turn yellow, birds fly south, and children trudge sadly to school. Including Astrid Degatti, who had just turned nine years old. Her sister Veronica is four and a half, but she still only knows how to breathe and summon demons because she has a brain the size of a bean. Well, little Luria is only a few moons old, so she doesn’t count at all yet. Astrid would also prefer to fly south rather than go to school. But mom won't allow it. Astrid's mother is an evil and bloodthirsty demon who enjoys the suffering of others. -...Astrid, stop lying around, you'll be late for school!.. Here. Which is what needed to be proven.