She pointed in the direction of the hillside. In the waning light, they could see a long line of men walking single file down the trail toward them. “It’s not six men anymore. It’s thirty-six. They must have heard all the gunshots and started this way to see what was up. Or maybe we’re so far from civilization that they can use radios without being overheard.”

“I’m sorry, Remi,” he said. “I really thought we had a good chance.”

She kissed his cheek. “You know, there’s a lot to be said for bees. When somebody comes to wreck their hive to take their honey, the bees generally lose. But they make it as unpleasant and painful for him as possible. I respect that.”

“It’s hard not to.”

“Let’s get every magazine loaded while we can still see. And don’t forget the shotgun.”

“Right,” said Sam. He went down the steps, crawled to the body of the man he had shot, took the man’s day pack, and crawled back with it. There was a box with a dozen shells for the shotgun, but the rest was useless—a canteen, a hat, spare clothes, most of a fifth of whiskey. Sam gathered more stones from the crumbled area at the end of the pool and piled them in the passage, then carefully piled up their supply of firewood in case they needed to start a fire.

He took the powerful flashlights they had brought for diving in the cenote, then climbed to the wall where Remi waited. He checked his pistols and hers to be sure they were fully loaded, then checked the ten spare magazines and reloaded the two they’d emptied. “See anything yet?”

“Nothing I can hit,” she said. “They’re still way back, out of pistol range. I think what they’ll do is wait until it’s fully dark and then move in close enough to hit us if we show ourselves for a second.”

“That’s the time-honored method.”

“What are we planning to counter it?”

“I’m considering another time-honored method.”

There were six, then eight, rifle shots that hit along the top of the wall at intervals of about a yard. “Too late,” she said. “They’re trying to keep our heads down so they can rush the entrance.”

Sam clutched the shotgun and ran down the steps, then lay against the pile of rocks he’d built. Two men appeared in front of him and he fired, pumped the shotgun, and fired again. Then Sam pumped his shotgun a second time, grasped the barrel of one man’s gun, and dragged it inside with him. It was a short submachine gun he was familiar with, an Ingram MAC-10. It had been at least ten years since they’d been manufactured, but he had no doubt it would work.