Murder in Mesopotamia is slow and methodical punctuated with brief moments of excitement and discovery, which is not unlike an actual archaeological dig or even Poirot's method of crime solving. The multiple references to the poem by Keats, La Belle Dame sans Merci, are an added bonus!
"If my Rolls-Royce splashes you with mud as you're waiting for a bus, you'll know that I've taken to crime." ~ chapter 4
"Germs can't do anything to an archaeologist--they just get naturally discouraged trying." ~ chapter 22