James Ponti is essentially the gold standard for modern middle-grade thrillers. City Spies succeeds because it doesn't talk down to kids; it assumes they are smart, capable, and interested in how the world actually works.

If your kid has already burned through Spy School or Alex Rider, this is the logical next step. It’s more emotionally resonant than the former and less grim than the latter. It’s a high-quality, high-velocity read that actually teaches a bit of geography and ethics along the way.