Amelia, a young secret agent, investigates some robotic animals, an enchanting music teacher, and a pair of remarkably beautiful twin bakers with a dastardly plot, all while avoiding her nemesis, Trudy Hart.

"A.J. and his friends are forming a band! At least, they are taking band classes. Their new teacher, Mrs. Bacon, can teach any instrument, from the kazoo to the tuba. But can she get A.J.'s class to play well enough during their recital to impress cranky Dr. Carbles? Or will their concert be a musical mess?" -- Cover.

"Fifth period is hands down the best time of day in Connor U. Eubanks Middle School, because that's when Mr. Lewis teaches Jazz Lab. So his students are devastated when their beloved teacher quits abruptly. Once they make a connection between budget cuts and Mr. Lewis's disappearance, they hatch a plan: stop the cuts, save their class. Soon, they become an unlikely band of crusaders, and their quest quickly snowballs into something much bigger--a...