It's only this book which has made me have early nights recently, for I read it in bed. I didn't want to spoil the suspense by finishing it in daytime.
It's plain enough to most people what the subject of the book must be, what happened on the Ides (15th) of March many years ago, the regular day for the beginning of government business in ancient Rome. It was an event that still affects European, and other, events. Think of this as a dramatic version of Tom Holland's Rubicon, another worthy five-star holder. And 'dramatic' means what it says.
Did the events described actually happen? Some certainly did, and some just possibly did. I'd like to think they did, but it's fun not knowing for sure. Something intriguing is that a major player, but not just too much, in this story isn't a person at all. It's epilepsy, which we know did apply in this case. And it might have made all the difference that day.
The characters? Some are easily recognisable. One or two others, someone like Mustela, might just possibly have existed. People like him, minor figures who make major differences, still do.
If you're a Mary Renault fan, as many people, rightly, are, don't hesitate. But don't read it in bed if you intend to sleep.