There's an invisible thief in the library who stole a valuable book signed by J.K. Rowling herself!And there's a ghost in the cinema, scaring the visitors. Well, in the courtyard, someone is dropping water bombs on defenseless passers-by!What's going on? The guys from the Iron agency must figure it out and save this city!However, suddenly they have an insidious competitor.… Who is he?Search inside:• Four detective stories• Instructions on how to start a blog • Cool color illustrationsbook was prepared jointly by the publishing houses "Lines" and "Swallowtail".