sometime between the morning and evening visits of regularly scheduled riverboats. At first it was thought that nearby Indians, who were normally peaceful, had become inexplicably hostile and had launched a surprise attack. However, there were no bodies found, no indications of fighting, and no evidence of looting. A message was discovered on the blackboard at the mission school: It has no shape, yet it has every shape. Many who investigated the Joya Verde mystery were quick to dismiss those nine chalk-scrawled words as having no connection with
