Authors:

Jace snorted so loudly that she turned on him with a frown. He wiggled his mud-caked fingers at her. His nails were black crescents. "Filthy inside and out.

Cassandra Clare (2010). “Cassandra Clare: The Mortal Instrument Series (3 books): City of Bones; City of Ashes; City of Glass”, p.434, Simon and Schuster
Jace snorted so loudly that she turned on him with a frown. He wiggled his mud-caked fingers at her. His nails were black crescents. Filthy inside and out.