Academy of Dark Blood. The Slayer Squad

The Moon, a half-blood with a mysterious past, is now part of an elite squad created to fight demons. Ever since the mark of the devil appeared on her chest, the girl has become a target for the inhabitants of the Abyss. And as long as sorcerous blood flows through her veins, the dark magic of the Moon, inherited from her enigmatic father, may awaken. In her very first semester, the half-blood broke the main rule – not to fall in love with her mentors with dark pasts. Now, the forbidden connection with the demon Ryder threatens to destroy them both. But worst of all, the demons know about Moon's unique abilities. To survive, the squad must eliminate all demons before they plunge the world into chaos and destroy the fragile balance between worlds.