Because it's a constant in this series.
I really hope that in the last book Hardy Boys say "Fuck off, we've had enough" and disappear with girls, guns and some money like Lupin III

I'm pleased as punch for you, I'm always glad when helping people find things.
I may consider buying it through Abebooks, because it still seems interesting; don't think there is an Italian translation

This isn't a bad plot at all http://www.hardyboyscasefil…

That would be great to read. What's his name ?

This could work…