“Why would they be afraid of this... ghost-spirit?” Gamay asked.

The doctor tweaked the end of his bushy gray mustache. “The Chulo, which is the local name for the tribe this gentleman belongs to, are said to live beyond the Great Falls. The natives say they are ghosts who were born of the mists. People who have gone into their territory have never come out.” He gestured to ward the canoe. “As you can see, this gentleman is flesh and blood like the rest of us.” He reached into the canoe and pulled out a bag made of flayed animal skin that was lying next to the corpse. The village natives backed away as if he were brandishing a sack full of black plague. He spoke in Spanish to one of the Indians, who became more animated the longer they talked.

Ramirez abruptly ended the conversation and turned to the Trouts. “They are afraid of him,” he said, and indeed, the village men were drifting back to their families. “If you would be so kind, we will haul the boat onto shore. I persuaded them to dig a hole, but not in their own cemetery. Over there, on the other side of the river, where nobody goes anyhow. The shaman has assured them that he can place enough totems on the grave to keep the dead man from wandering.” He smiled. “Having the body so near will give the shaman more power. When something goes wrong with his spells he can always say the dead man's spirit has returned. We will send the boat off by itself down the river, and the spirit will be allowed to follow it.”

Paul eyed the canoe's fine workmanship. “Seems a shame to waste such a beautiful example of boat building. Anything to keep the peace.” He grabbed one end of the canoe. With the three people pulling and pushing, they soon had it up on the shore away from the river. Ramirez covered the body with a woven blanket from the canoe. Then he retrieved the sack, which was about the size of a golf bag and tied with thongs at the open end.

“Perhaps this will tell us more about our ghost,” he said, leading the way back to the house. They went into the study and placed the bag on a long library table. He untied the thongs, opened the bag gingerly, and peered inside. “We must be careful. Some of the tribes use poisoned arrows or blowgun darts.” He lifted the bottom of the sack, and several smaller bags slid out onto the desk. He opened one and extracted a shiny metal disk that he handed to Gamay. “I understand you studied archaeology before you became a biologist. Perhaps you know what this is.”

Gamay furrowed her brow as she examined the flat, round object. “A mirror? It appears that vanity is not confined to women.”

Paul took the mirror from her hand and turned it over to examine the markings on the back. A smile crossed his face. “I had one of these when I was a kid. It's a signal mirror. Look, these are dots and dashes. This isn't like any Morse code I know, but it's not bad. See these little stick figures? A basic code. Guy running one way means come, facing the other direction is go, I'd guess. Here's someone lying down.”