“There must have been something in her voice, because he turned to look at her. Her hand cracked across his face, a slap that rocked him back on his heels. He put his hand to his cheek, more in surprise than pain. "What the hell was that for?""The other ten percent,” she said.”

Cassandra Clare is an American author of young adult fantasy. She gained prominence for her *Mortal Instruments* series, blending urban fantasy and gothic romance, and later expanded her world with the *Shadowhunters* novels. Her work explores themes of identity, destiny, and hidden supernatural communities.