I think you should read Stuart Gibbs's Spy School Goes South , witch is a really good book about 5 kids going on an undercover mission that nearly gets them all killed.
I really like when Ben, Erica, Zoe, Mike, and Murray get trapped in Mexico while trying to spy on an evil organization.
I like this book because one of them has a crush on 2 others and one is from the evil organization! It also conveys the message that you should trust your friends.
And those are my reasons to why I think you should read this book.