Red Sister

Author's name: Mark Lawrence

In the heart of a crumbling empire, where thrones thirst for blood and the sun dies in the sky, lies a merciless monastery: "Sweet Compassion." Not a place of prayer, but of training. Here, girls are raised to become perfect instruments of death. But all the rules change with the arrival of Nona Grey.
At only nine years old, stained with the blood of a terrible murder, she was placed at the convent gates as a last refuge from the gallows. In this harsh world, where the blood of ancient lineages grants superhuman powers, Nona displays a rare gift that makes her more than just an ordinary pupil; she is "The Red Sister," a title that foreshadows bloody destinies.
Over the course of a decade, she transforms from a terrified child into a trained assassin under the tutelage of the enigmatic Abbess, Glass. She learns the arts of shadow and blade, forges powerful friendships, and discovers equally vicious enemies. But the fortified abbey is not immune to the world; Nona's dark past catches up with her, bringing with it the winds of imperial intrigue and attracting the attention of the most powerful man in the empire.
"Red Sister" is the explosive start to a ruthless series where every sword strike is a lesson in politics, and every friendship a double-edged sword. It's the story of a girl who learns to tame the beast within... and then unleashes it on a world that deserves destruction.