DARBY KARCHUT. Del Toro Moon. Owl Hollow Press. Trade paperback, ebook, 256 pages, $12.99; $3.99. www.darbykarchut.com A family of modern day caballeros—descendants of Spanish knights and aided by talking Andalusian war horses—must saddle up and save their friends and their town from a growing horde of wolf-like monsters known as skinners.