The first quarter of this story was a lot of setup and propaganda for pro-government and pro-enforcement. It doesn't really stand up to the times, due to the glorification and romanticism of the role. There is also a good portion of time devoted to explaining how evidence gathering works, which again makes sense for the time, but is unnecessary now.
The story apart from this was very intriguing, as there was more in play than met the eye. Be aware though that the perspective/story shifts suddenly within chapters and without even white space between paragraphs. Due to the perspective jumps, there are also some timeline jumps as the author tries to keep up with multiple characters during the story.
A cute antique boy's mystery. Aimed for a similar audience to early Hardy Boys books, no doubt, and while some elements of the plot seem a little simplistic, it does a pretty good job of filling out the book with intrigue. There's actually a ton of action, a good amount of drama, double-cross, twists and turns with the father's position as a spy in question, the works. A little unbelievable or storybookish at times, which is to be expected for the audience, but still a fun little read.