As a child I read a lot of Agatha Christie. It's been many decades since I last read one of her novels and I was very curious to see what I'd think all these years later.
I'm pleased to report that the tale was enjoyably formulaic: all the suspects in one place, and all amenable to being brought together for the big reveal. All this delivered with the whiff of casual racism and some snobbery (though far less than many writers of that era).
Having said all that, I didn't see the final twist coming which, as I recall, was a regular occurrence. Basing the story in Jerusalem and the Middle East, and with a monstrous Matriarch at the story's core, were memorable flourishes. I won't be leaving it do long before revisiting another Agatha Christie novel.