My Substitute Teacher Has No Shadow: Book 2

Something is seriously wrong with Ms. Marrow.She doesn't blink. She never eats at lunch. And when the afternoon sun streams through the classroom windows, it passes straight through her like she's not even there.No shadow. None at all.Wren knows nobody else has noticed. But she can't un-see it. And when her seven-year-old sister comes home from school talking about how "special" their new substitute teacher thinks she is, Wren's stomach drops.Because Ms. Marrow isn't just at Wren's school. She's at her sister's school too. And she keeps saying the same thing: You might be special enough.Then Wren finds something impossible in the school's boiler room. Something that used to be a person.Now she has three weeks to figure out what Ms. Marrow actually is, why her town is hiding something huge, and how to save her sister before the Harvest Festival-before something that's been hunting in the shadows for two hundred years finally comes out to collect.Some teachers are scarier than any monster under the bed.