Ngaio Marsh 
When in Rome [EPUB ebook] 

A British tour group in Italy finds murder is an obstacle to their sightseeing: “Fastidious writing [and] a fine appreciation of place.” —Sunday Times A group of well-to-do tourists is visiting Italy’s magnificent churches, but they’ve found themselves stumbling into an unholy web of blackmail and drug-smuggling—and, in the depths of a Roman basilica, murder. Fortunately Inspector Roderick Alleyn is among the group as part of an undercover assignment, and prepared to extract a confession . . . “A lively thriller whodunnit.” —The Observer “The nonpareil among criminal investigators.” —The New York Times