Mr. Benedict wants to stop Mr. Curtain from brainsweeping everyone in the world, but Mr. Benedict needs child spies to infiltrate Mr. Curtain’s school. He recruits Constance, Kate, Reynie, and Sticky--kids with special talents--to pretend to be students there. They find the machine Mr. Curtain is using to brainsweep people. After overcoming many challenges, they succeed in forcing Mr. Curtain into hiding.
My favorite part was when Reynie, Kate, Sticky and Constance highjacked the machine because it had a lot of action and some of it was funny. I would recommend this book to people who like action and to people who like laughs.