Citadels of Fire - Hill L. K.

In a world where danger hides in plain sight and no one aspires to more than what they were born to, Inga must find the courage to break the oppressive chains she's been bound with since birth. Even as a maid in the infamous Kremlin, life in 16th-century Russia is bleak and treacherous. That is, until Taras arrives. Convinced that his mother's death when he was a boy was no mere accident, he returned from England to discover what really happened. While there, he gains favor from the Tsar later known as Ivan the Terrible, the most brutal and notorious ruler ever to sit upon the throne of Russia. Ivan allows him to take a servant, and to save Inga from a brutal boyar intent on raping her, Taras requests Inga to stay in his chambers. Up against the social confines of the time, the shadowy conspiracies that cloak their history, and the sexual politics of the Russian Imperial court, Inga and Taras must discover their past, plan for their future, and survive the brutality that permeates life within the four walls that tower over them all, or they may end up like so many citizens of ancient Russia: nothing but flesh and bone mortar for the stones of the Kremlin wall.