Looking for a book on Rasputin/the Romanovs?

As the title says, a book on Rasputin but also the Romanovs…perhaps focusing on the downfall of the Russian monarch, politics, but hopefully with a good focus on Rasputin.

Non-fiction but easy to read…not dry or with a billion footnotes. We don’t want any of that “based on history” fiction stuff…you know, like The Other Boleyn Girl or something. Hopefully there is something that is all fact, doesn’t make undeclared supposition, but still is a smooth read and a page turner.

Thanks!