Courts of Idleness — Dornford Yates

These comic stories are set during World War I and the period just after, when the genteel world of Edwardian England had changed beyond recognition. One of Yates' earliest books, it harks back to that more decorous, decadent time, and we encounter the madcap adventures of a group of well-to-do young people as they career across Europe from Madeira to Macedonia fighting heinous villains and solving mysteries.