In this first book of the Agent Amelia series, elementary school secret agent Amelia Kidd uses her skills and gadgets to protect the world.  In the first chapter, she is convinced her teacher is a criminal mastermind who intends to steal the Ghost Diamond.  In Chapter 2, cats are disappearing.  She suspects a local fish shop of planning a bank robbery using the cats to infiltrate the bank.  In chapter 3, while at a garden center with her family, she suspects an employee of developing hybrid weeds to spread into every garden and farm.  Amelia uses disguises and devices to foil the attempts of these evil geniuses and to save the world.  Michael Broad’s pencil illustrations and large font make this fast-paced story entertaining.  This series appears to be written for a younger reader, yet the AR level is upper fifth and sixth.