Thieves Like Us, by Robert Edmond Alter (epub/Kindle/pdf)
Cheops' daughter, the story goes, earned the money for her pyramid by practicing what was even then the Oldest Profession. Her price had been one stone per man. She built a pretty big pyramid.
Many centuries later, beautiful Greta Brandt also made some fancy burial plans -- but they were for her husband Farley, who wasn't dead yet. And until he was, Greta intended to leave no stone unturned.
Then she met Dave Ferris, a young and not-too-scrupulous archaeologist, who could be bought for the price of bail. And although he was a new hand at Greta's game, he was learning fast...and he was not made of stone.