Don Carlos Buenaventura, the protagonist of "The Last of Our Kind," is a powerful brujo living in Santa Fe, New Mexico, a remote settlement on the edge of Spain's North American empire. The year is 1706. Comanche war parties are boldly conducting raids nearby, French traders and soldiers are aggressively expanding toward New Mexico from the Great Plains, and agents of the Spanish Inquisition have arrived in search of a brujo suspected of being...