In addition to being a sucker for mysteries set in France, I'm just as much a sucker for mysteries set in Egypt - either ancient or modern-day. And Carol Thurston's
The Eye Of Horus fits the bill - as you might guess from its title

...
I read this in DTB many many years ago, and although I'm not usually a fan of the "then-and-now/parallel timeline" approach, Thurston made it work. I don't remember a lot of details, but do remember that I really liked it, and even shed a tear or two while reading. And I was sad that Thurston never wrote any more. So, now that it's on sale at Kindle US for $1.99, I'll probably grab it and put it near the top of my TBR (or TB Re-Read) list.
Kindle US:
https://www.amazon.com/dp/B0049B22SE