" The masked man spun and ran. Casteel was faster, reaching him in the blink of an eye. He shoved his fist into the man’s back and jerked his arm back sharply, pulling out something white and smeared with blood and tissue. His spine. Dear gods, it was the man’s spine. Kieran’s eyes met mine. “He’s a little angry.” “A little?” I whispered. “Okay. He’s really angry, "

― Jennifer L. Armentrout , The ​Crown of Gilded Bones (Blood and Ash, #3)