What an interesting combination of entertainment and education! I have always been interested in poison, disturbing though that may be, but I really appreciated learning both about poisons and poisoning.
There were several specific instances where an individual or more than one actually used specific poisons to commit murder (as has been done both privately and publicly, and pains were taken to explain the effects of said poisons on the body and how said effects could be detected and attributed.
The author also pointed out that poisons, in and of themselves, are not evil. As the well and overused statement goes, “The dose makes the poison,” and many substances that are considered poisons are also used as medicines or treatments as well.
As I said, this book was total entertainment and education.