Geoffrey Robertson is a top QC, Australian-born. He is also a prolific writer of many legal-related books.
This 2019 book was a book I looked forward to reading. I am particularly interested in the legitimacy of the taking by Lord Elgin of the Parthenon Marbles from the Acropolis in Athens, Greece. Unfortunately, I was a bit disappointed as the points made was not supported by an appendix of the core documents. While I do not doubt the soundness of his verdict, readers looking for a bit more and deeper will feel disappointed.
The book also surveys looted treasures like the Benin Bronzes, Rosetta Stone, Bust of Nefertiti, and the sacking of the Old Summer Palace in Peking. Again, each has only a few pages devoted to it.
So, ultimately a good introduction but could have been much better.