There was the faint sound of water dripping somewhere in the distance, but other than that, the passage was completely still. The cool, dark space was a welcome relief from the heat they had endured outside all day.

One by one, they took the old stone steps slowly and quietly. When they reached the bottom, the passageway gave onto a low, rough tunnel that seemed to slope down toward the center of the earth itself. Harvath kept the flashlight pointed toward the ground with his thumb on the switch, poised to turn it off at a moment’s notice if he had to. His other hand was wrapped tightly around the Browning. Meg Cassidy followed right behind, with one hand holding on to the back of Harvath’s shirt to help guide her steps in the darkness.

By the time the slope leveled out, Harvath figured they had walked at least half a mile. He turned off his flashlight when he could see light coming from up ahead. They covered the last fifteen yards and emerged within an enormous cavern. Rows and rows of wide alcoves were carved one upon another all the way to the ceiling. It was obvious to Harvath and Meg that this was a giant mausoleum, once part of the ancient catacomb system of Rome. Its present-day occupation was exponentially more sinister.

The room had been set up as a mini armory and supply depot. Ammunition, C4, and grenades, were stacked side by side with several assault rifles, pistols, and submachine guns. In addition there was a neat pile of antitank weapons, and surface-to-air missiles. Someone was planning one serious party.

There were boxes of food, bottled water, medical supplies, clothing, blankets, and even copies of the Koran, which made Harvath suspect that the place had also been set up to act as some sort of a safe house.

They picked their way further back into the cavern, where they found a large table covered with neat stacks of paper. As Meg examined the papers, Harvath saw something that stopped his heart cold.

65

Stacked against one wall of the mausoleum were about a dozen small canisters. Harvath didn’t need to open them to know what they contained. In fact, opening them would have been a deadly mistake. He could tell from the emblems on the outside that they contained radioactive material. Totaling that with all of the plastique and various other high-grade explosives housed within the large depot, Harvath didn’t even want to think about the potential devastation Adara Nidal could cause.

Meg was still looking at the papers when Harvath ran over with a very worried expression on his face and said, “We’re getting out of here now.”

“What’s going on?” asked Meg.

“I’ve got to get to a phone and call Washington.”

“Give me a few more seconds on these. There are FedEx and UPS airbills here made out to addresses in different cities across the United States. They appear to be for ten- and fifteen-pound boxes, but what would they be shipping to the U.S.?”

Harvath didn’t have a chance to respond. He heard a sound and spun, just in time to see the three men in business suits enter from a tunnel at the back of the cavern and point their Italian-made Spectre M-4 submachine guns right at them. Harvath didn’t waste any time. He knocked Meg to the ground and fired off two shots from the Browning. He saw one of the men go down, but couldn’t tell where he had hit him.

The man’s colleagues opened up with a storm of automatic-weapon fire, splintering the long wooden table to pieces and sending papers flying everywhere.

Harvath and Meg dove behind a nearby crate.

“There’s only two of them now, so it’s not even a fair-” Harvath was saying until he heard something roll toward them across the smooth stone floor. “Grenade!” he yelled as he covered Meg, and rolled as fast as he could with her away from where they had been hiding.

The man who had pitched the flash bang had miscalculated the slope of the floor. The small canister came to a stop and actually began rolling backward before it detonated. The concussion was still strong enough to set everyone’s ears ringing.

Harvath grabbed Meg, who was busy stuffing the paperwork she had found into her shirt, and helped her up into a crouch. Mouthing the words and counting to three with his fingers, they ran out from behind a series of pallets and dodged a hail of bullets as they charged to the other side of the mausoleum.

Water everywhere and not a drop to drink, thought Harvath as he tried a crate of ammunition only to find it was nailed shut. “My kingdom for a crowbar,” he muttered to himself. Then it hit him. He did have one. After handing Meg the Browning and a fresh clip, he reached into his pocket and pulled out his knife. He depressed the button, and the blade swung up and locked into place. Harvath slid the knife under the lid of the wooden crates and, with two hands, began working it up and down until the lid was loose enough to get his fingers under.

Meg exchanged fire several times with the men, who were maneuvering in closer for the kill.

“Whatever you’re working on,” said Meg as she ejected the Browning’s spent magazine and replaced it with the fresh one, “I suggest you hurry it up, because they’re going to be on top of us any minute.”

“I’ve almost got it,” said Harvath as he grabbed a can of 5.56 ammunition as fast he could. He ripped it open and rammed three speed-loader clips of ten rounds into the magazine of each of the two Steyr AUG assault rifles he had pulled from where they leaned against the wall. The magazines in place, he handed one of the Steyrs to Meg and took back the Browning.

“Ready?” he asked.

“And then some.”

“Short bursts. Just like we trained.”

“Let’s do it.”

Harvath left Meg where she was and crept back behind several boxes. The idea was for him to move far enough away to trap their attackers in a deadly alley of crossfire from both sides. Harvath heard the firing of the nine-millimeter Spectres and ran across the aisle to another set of boxes, before making his way back down toward Meg.

When the men were almost on top of her, she opened fired with her Steyr as Harvath popped up and started shooting in rapid, controlled bursts from the other side. Until this point, the Middle Easterners had pursued their quarry thinking they only had one handgun between them. The machine gun fire, coming from both directions, completely altered the equation, and the two men retreated toward the tunnel at the far end of the cavern.

Harvath chased them with every round he had loaded in his Steyr and when Meg caught up with him, he took hers and fired until there was nothing left. He had no idea if they would regroup or not, but he reloaded before he and Meg proceeded down the tunnel.

They had gone only twenty feet when they came upon the body of the first man Harvath had shot. With a hit to his chest and one to his forehead, he lay on the ground with the submachine gun still clasped in his dead hand. Harvath fished through his pockets, but only came up with several hundred Euros. Whoever he was, he was professional enough not to be caught with any ID. Harvath shouldered his Steyr and picked up the dead man’s Spectre. He checked the fifty-round magazine and saw that it hadn’t even been fired.

Meg covered Harvath as he ran down the tunnel to see what had happened to their two remaining attackers.

At the end of the passageway was an old freight elevator, which was on its way down. When the large wooden door was rolled open, the first man to step out was Hashim Nidal.

Harvath didn’t wait to be noticed. He turned and ran back into the tunnel, where Meg was waiting.

“It’s Hashim Nidal. Don’t let him out of your sights,” said Harvath as he ran past her.

“What if he moves?” asked Meg.

“Then shoot him,” he said over his shoulder as he ran back into the mausoleum.