Lost in thought, I didn’t answer. Mentally, I ticked off what we had learned. Vargas served the god Xipe Totec, Guzman was a priest of Huitzilopochtli, and the bacab who’d summoned the blood spirit on the teocalli served Tezcatlipoca. Now Vargas was fingering a priest of Quetzalcóatl. It looked as though my guess had been correct. All four bacabs had been working with the cultists, at one point in time. But only one of them had killed Mama Grande.