Lives of the Stoics (2020) by Ryan Holiday.
I am not a fan of Holiday as a person (he's using and abusing the term Stoic), but I must say many of his products are good. Lives of the Stoics analyzes, as the title imply, the lives of several Stoics or pseudo-Stoics (such as Cicero). This book is a rare combination of my current interests, namely philosophy, Roman History, and Stoicism.
The good is that I had the opportunity to read more about many unknowns. The bad is that Holiday takes way too many liberties, from nicknames to actual made up stories. Some interpretations are also debatable.
One thing that truly disturbed me was his continued use of the term "king" in relation to Roman rulers during the Republic and the Empire which is incorrect as it can be, and a term that Romans themselves would've never used (it was an insult).