This is a popular history account of the final illnesses of various historical personages reputed to have died of poison. It also has some general poison information and some more modern poisons and poisoners. Plus some historical medical information, ghastly as it may seem to us.
The author's tone sometimes veered toward condescension when talking about various mercury and arsenic cures but it's interesting that some of them actually worked. Of course, poisoning the patient was a potential side effect but avoidable in the right dose. Anyway, it was interesting that the author combined the historical autopsies with the modern diagnoses and autopsies (if available) because I honestly had no idea that autopsies were such a common thing that long ago (at least among the nobility).
I was also introduced to some historical personages that I hadn't heard of before (I'm not exactly a history buff) so that was cool, although a lot of the people were English, French, and Italian. Anyway, it's not overly rigorous by any means, but I found it interesting.