The first Gallagher Girls book was very quick and easy read. It's not complex and it's easy to follow, but the basis of a spy-school for girls is an interesting one. I liked all of the characters that were introduced and Cammie is a promising protagonist - It's nice to see girls being shown as strong characters in the YA genre. The romance between Cammie and Josh was sweet enough without being over the top. The book could be stepped up a level, but it's definitely good as an easy read and I don't think that should be ruined. My main, but not very serious, complaints is that sometimes the book felt a little jumpy or not very clear and there were quite a lot of mistakes that should've been edited out. I'm not desperate to read the rest of the series, but it's definitely not something I'd rule out - I see these books as being fun reads.