I enjoyed this Poirot story - the Jerusalem and Petra setting it apart from the English stately home stories. The environmental aspects are detailed and authentic, adding depth to the story, reflecting Christie's travels in the area (though unfortunately some of her views on Jews are also brought up).

The first half is spent setting up the characters and Poirot doesn't really make an appearance until the second half. We then get to see him do his, 'I'm going to sit here, let them come to me, listen and work it all out' routine. He feels more relaxed here, possibly reflecting his holiday persona.

I liked it but think the changes Christie made to the stage version (in terms of the ending) makes for a better story. I actually wondered if that was going to be the solution while I was reading before picoting and I actually worked this one out - admittedly, not a common occurrence for me. Not the best but a solid Poirot story.