Sounds like a perfect place to go if you want to disappear. Spymaster Steady Haynes has died, leaving his son Granville his memoirs, a story so juicy that people are willing to kill for it. Fortunately Granny's got the boys from Mac's Place on his side. This is the one that got me hooked. The books are all similar and pretty good.
Ives goes to Yugoslavia to ransom a kidnapped diplomat.
Ives in London, trying to secure the return of a stolen sword. Ives tries to recover a rare copy of Pliny's Historia Naturalis .