This book is SO AMAZING! The plot pulled me in to this fast-paced adventure! Reynie Muldoon, an orphan, sees an ad in a newspaper that says, "Are you a gifted child looking for special opportunities?" Reynie passes 3 important tests that qualifies him for a special opportunity as described to him. But who would have thought that this "special opportunity" would be a incredibly important spy mission? Reynie and the other 3 kids who passed the tests, Sticky Washington, Kate Wetherall, and Constance Contraire, are instructed by Mr. Benedict to go to the LIVE Institute run by the evil mastermind Ledroptha Curtain. Mr. Curtain has this institution to use the children attending in his plan. He wants to rule the world, as most villains you know do, but the way he wants to do it is by controlling people with the telepathy. He takes the students in his school to whisper messages that broadcast into other people's minds. He is working towards the Improvement, as he calls it, which will erase people's memories! I know, right? Who would have thought? It's up to the Mysterious Benedict Society to foil Mr. Curtain's plan. Can they do it? I really loved this book, 5/5 stars! I encourage adventure-loving people to read this book!