His Fair Assassin Series by Robin LaFevers

Why be the sheep, when you can be the wolf?Seventeen-year-old Ismae escapes from the brutality of an arranged marriage into the sanctuary of the convent of St. Mortain, where the sisters still serve the gods of old. Here she learns that the god of Death Himself has blessed her with dangerous gifts—and a violent destiny. If she chooses to stay at the convent, she will be trained as an assassin and serve as a handmaiden to Death. To claim her new life, she must destroy the lives of others... moreWhy be the sheep, when you can be the wolf?Seventeen-year-old Ismae escapes from the brutality of an arranged marriage into the sanctuary of the convent of St. Mortain, where the sisters still serve the gods of old. Here she learns that the god of Death Himself has blessed her with dangerous gifts—and a violent destiny. If she chooses to stay at the convent, she will be trained as an assassin and serve as a handmaiden to Death. To claim her new life, she must destroy the lives of others.Ismae’s most important assignment takes her straight into the high court of Brittany—where she finds herself woefully under prepared—not only for the deadly games of intrigue and treason, but for the impossible choices she must make. For how can she deliver Death’s vengeance upon a target who, against her will, has stolen her heart? less

I lean forward, pushing my body out past the battlements. The wind plucks at my cloak, buffets against me, as if it would carry me off in flight, just like the birds or the knight's soul. Let go, it cries, I will take you far, far away. I want to laugh at the exhilarating feeling, I will catch you, it whistles seductively.The convent has returned Sybella to a life that nearly drove her mad. Her father's rage and brutality are terrifying, and her brother's love is equally monstrous... moreI lean forward, pushing my body out past the battlements. The wind plucks at my cloak, buffets against me, as if it would carry me off in flight, just like the birds or the knight's soul. Let go, it cries, I will take you far, far away. I want to laugh at the exhilarating feeling, I will catch you, it whistles seductively.The convent has returned Sybella to a life that nearly drove her mad. Her father's rage and brutality are terrifying, and her brother's love is equally monstrous. When she discovers an unexpected ally imprisoned in the dungeons, will a a daughter of Death find something other than vengeance to live for? less

Annith has watched her gifted sisters at the convent come and go, carrying out their dark dealings in the name of St. Mortain, patiently awaiting her own turn to serve Death. But her worst fears are realized when she discovers she is being groomed by the abbess as a Seeress, to be forever sequestered in the rock and stone womb of the convent. Feeling sorely betrayed, Annith decides to strike out on her own.She has spent her whole life training to be an assassin... moreAnnith has watched her gifted sisters at the convent come and go, carrying out their dark dealings in the name of St. Mortain, patiently awaiting her own turn to serve Death. But her worst fears are realized when she discovers she is being groomed by the abbess as a Seeress, to be forever sequestered in the rock and stone womb of the convent. Feeling sorely betrayed, Annith decides to strike out on her own.She has spent her whole life training to be an assassin. Just because the convent has changed its mind doesn't mean she has... less

In fifteenth-century France, the convent of Saint Mortain provides sanctuary to girls seeking refuge from the cruelty of the outside world. But sanctuary comes at a price—and each of Death’s handmaidens pays it in blood.  Grave Mercy is where the story begins, when seventeen-year-old Ismae escapes the brutality of an arranged marriage by joining the convent... moreIn fifteenth-century France, the convent of Saint Mortain provides sanctuary to girls seeking refuge from the cruelty of the outside world. But sanctuary comes at a price—and each of Death’s handmaidens pays it in blood.  Grave Mercy is where the story begins, when seventeen-year-old Ismae escapes the brutality of an arranged marriage by joining the convent. An assignment brings her to the high court of Brittany, where she must navigate treason and temptation—especially when the master she serves demands the life of the man she loves.   In Dark Triumph, after training as an elite killer to escape her past, Sybella must return to the home she thought she’d never see again. Her quest for justice against her violent family will bring nothing but destruction—until she meets a prisoner who gives her a reason to live.   Annith yearns to serve Saint Mortain, but has spent her life watching her far more gifted sisters dole out Death’s vengeance from the safety of the convent. In Mortal Heart, her destiny is finally revealed, and it is the one she feared most: a life as a seeress, not an assassin. But Annith refuses to give up on her dream and decides that nothing will stand in the way of her ambitions . . . not even the convent itself.   Together, these three novels make up the New York Times best-selling His Fair Assassin trilogy, where romance, magic, and political intrigue collide. Fans of Marie Lu’s The Young Elites and Kiersten White’s And I Darken will love this seductive dark fantasy collection. less