They reached the corner of the pyramid and Rick sighted along the edge.

The thing that impressed him most was the size of the individual blocks. Photographs were usually taken at sufficient distance to show the entire pyramid. At that distance they looked pretty smooth. Close up, it was a tremendous jigsaw puzzle of blocks that weighed tons.

Rick had expected a considerable number of tourists and guides, but apparently it was too early. Down by the Sphinx he saw a few Arabs, but no foreigners were in sight. He was glad they could see at least a part of Giza before the crowd arrived. "Take us inside, Hassan," he requested.

"Can do. You follow."

Hassan led the way to the center of the side. High above their heads, he pointed to a hole. "Up there."

The three climbed through tumbled blocks to the opening and paused to look around. This was not the opening the Pharaoh had intended. It had been made by thieves, centuries ago. By boring downward at an angle, they had intercepted the inner passageways that led to the buried king and his treasure.

Electric lights were strung along the corridor at intervals, but the passage was far from bright. Hassan led the way, with Rick following and Scotty bringing up the rear.

Scotty's voice reverberated in the stone passageway. "I've been thinking that you ought to be just about overcome with happiness. Two mysteries on your hands, one detective type and one scientific type, and now you're walking into the middle of a few million tons of rock. How full can life get?"

Rick grinned. "And you're not happy at all. Just came along for the ride, I suppose?"

"Oh, I'm happy. But I'm a simple soul. One mystery at a time and plenty of chow is all I need."