The Conqueror's Saga Series by Kiersten White

No one expects a princess to be brutal. And Lada Dragwlya likes it that way. Ever since she and her gentle younger brother, Radu, were wrenched from their homeland of Wallachia and abandoned by their father to be raised in the Ottoman courts, Lada has known that being ruthless is the key to survival. She and Radu are doomed to act as pawns in a vicious game, an unseen sword hovering over their every move. For the lineage that makes them special also makes them targets... moreNo one expects a princess to be brutal. And Lada Dragwlya likes it that way. Ever since she and her gentle younger brother, Radu, were wrenched from their homeland of Wallachia and abandoned by their father to be raised in the Ottoman courts, Lada has known that being ruthless is the key to survival. She and Radu are doomed to act as pawns in a vicious game, an unseen sword hovering over their every move. For the lineage that makes them special also makes them targets. Lada despises the Ottomans and bides her time, planning her vengeance for the day when she can return to Wallachia and claim her birthright. Radu longs only for a place where he feels safe. And when they meet Mehmed, the defiant and lonely son of the sultan, Radu feels that he’s made a true friend—and Lada wonders if she’s finally found someone worthy of her passion. But Mehmed is heir to the very empire that Lada has sworn to fight against—and that Radu now considers home. Together, Lada, Radu, and Mehmed form a toxic triangle that strains the bonds of love and loyalty to the breaking point. less

Lada Dracul has no allies. No throne. All she has is what she’s always had: herself. After failing to secure the Wallachian throne, Lada is out to punish anyone who dares to cross her blood-strewn path. Filled with a white-hot rage, she storms the countryside with her men, accompanied by her childhood friend Bogdan, terrorizing the land. But brute force isn’t getting Lada what she wants. And thinking of Mehmed brings little comfort to her thorny heart... moreLada Dracul has no allies. No throne. All she has is what she’s always had: herself. After failing to secure the Wallachian throne, Lada is out to punish anyone who dares to cross her blood-strewn path. Filled with a white-hot rage, she storms the countryside with her men, accompanied by her childhood friend Bogdan, terrorizing the land. But brute force isn’t getting Lada what she wants. And thinking of Mehmed brings little comfort to her thorny heart. There’s no time to wonder whether he still thinks about her, even loves her. She left him before he could leave her. What Lada needs is her younger brother Radu’s subtlety and skill. But Mehmed has sent him to Constantinople—and it’s no diplomatic mission. Mehmed wants control of the city, and Radu has earned an unwanted place as a double-crossing spy behind enemy lines. Radu longs for his sister’s fierce confidence—but for the first time in his life, he rejects her unexpected plea for help. Torn between loyalties to faith, to the Ottomans, and to Mehmed, he knows he owes Lada nothing. If she dies, he could never forgive himself—but if he fails in Constantinople, will Mehmed ever forgive him? As nations fall around them, the Dracul siblings must decide: what will they sacrifice to fulfill their destinies? Empires will topple, thrones will be won . . . and souls will be lost. less

Haunted by the sacrifices he made in Constantinople, Radu is called back to the new capital. Mehmed is building an empire, becoming the sultan his people need. But Mehmed has a secret: as emperor, he is more powerful than ever . . . and desperately lonely. Does this mean Radu can finally have more with Mehmed . . . and would he even want it? Lada's rule of absolute justice has created a Wallachia free of crime. But Lada won't rest until everyone knows that her country's borders are inviolable... moreHaunted by the sacrifices he made in Constantinople, Radu is called back to the new capital. Mehmed is building an empire, becoming the sultan his people need. But Mehmed has a secret: as emperor, he is more powerful than ever . . . and desperately lonely. Does this mean Radu can finally have more with Mehmed . . . and would he even want it? Lada's rule of absolute justice has created a Wallachia free of crime. But Lada won't rest until everyone knows that her country's borders are inviolable. Determined to send a message of defiance, she has the bodies of Mehmed's peace envoy delivered to him, leaving Radu and Mehmed with no choice. If Lada is allowed to continue, only death will prosper. They must go to war against the girl prince. But Mehmed knows that he loves her. He understands her. She must lose to him so he can keep her safe. Radu alone fears that they are underestimating his sister's indomitable will. Only by destroying everything that came before--including her relationships--can Lada truly build the country she wants. Claim the throne. Demand the crown. Rule the world. less