A new school year brings a new classmate to Griswalds Grammar School! But he's strange, and he really, really like onions. When the whole school suddenly becomes friends with him, Shauna seems to be the only one left out. It's up to her to peel back the mystery, one onion layer at a time! Join the team for another thrilling case, full of the cunning wit and high-flying adventure you can only get from John Allison's BAD MACHINERY.