Murder in Mesopotamia

I have been reading through all of Christie'a mysteries chronologically and I have to say this one doesn't stand out to me, though I did enjoy it. The best part is the setting, and the narrator is at least not as annoying as Hastings. The characters were semi-interesting. But I felt like I guessed it from the beginning as far as who and why and then the rest was me trying to figure out how the murder was committed, which ended up not being all that impressive. That said, I have really enjoyed some of her less popular books. So it is all a matter of preference.