She shrugged. 'I believe evil has always been around and in the absence of science, ancient people attributed everything bad to the wrath of G.o.ds and demons. All mythology is crammed with superst.i.tion.'

'Let's have a look at the other pictures Jason sent,' he suggested, reaching out to help her open the remaining file. When it came up, he wasn't sure what he was looking at. 'Any idea what this is?' He turned the BlackBerry back to her.

Brooke's eyes went wide and she s.n.a.t.c.hed the BlackBerry back from him. 'Writing,' she said, excited. 'The same kind of text I deciphered in the cave's entry tunnel.'

'I still don't see how that that is writing?' The shadowy edges of the tightly packed, wedged-shaped symbols appeared more 'design' than text. is writing?' The shadowy edges of the tightly packed, wedged-shaped symbols appeared more 'design' than text.

'The oldest writing ever recorded,' she reminded him. She noticed Lilith's feet and the bone pile images had been cut off along the top edge of the picture. 'Looks like Jason found this below the etching of Lilith.'

'What does it say?'

She shrugged. 'I'm sure I can decipher it ... looks clear enough.' Luckily, Jason had used plenty of light to pull the shadows out from the characters. 'But I'll need to enlarge it.'

Flaherty glanced out the window and was surprised to see that the jet was already gliding in low over the runway at Las Vegas International. 'No problem. I'll transfer the file to my laptop,' he said, patting his carry-on bag. 'The screen is plenty big. You can read it in the car.'

'Awesome,' she said, beaming. 'Tommy, we might just get Lilith's story after all. Do you know what that means?'

She looked like a kid who'd just been told she'd have to wait to open her birthday presents. 'Not really, but I'm sure you'll tell me.'

47.

IRAQ.

Lance Corporal Jeremy Levin estimated that fifteen minutes had elapsed since Crawford's marines hung an American flag from the cross bar directly behind his patient's head. They'd also set up a tripod-mounted digital camcorder to record the colonel's systematic interrogation.

This was no ordinary patient.

As Colonel Crawford fired away his probing questions - mainly queries as to where the convoy had been heading and the rumour that Al-Zahrani was plotting to detonate a suitcase nuke in New York on the anniversary of 9/11 - the subdued Kurdish translator used a marker to scrawl the queries on to a notepad in both Arabic and English.

The patient was highly uncooperative; though not by choice, Levin was certain. He could tell by Al-Zahrani's withdrawn and hazy gaze - unresponsive when the Kurd held the notepad in direct view - that his condition was deteriorating at an alarming rate. Only five minutes ago, Al-Zahrani had begun coughing. Now that cough was persistent and accompanied by heaving lungs that wheezed and gurgled. Coupled with Al-Zahrani's fever, malaise and runny nose, Levin suspected that the prisoner had come down with the flu. In a civilian setting where containment was a simple matter of bed rest, influenza wasn't critical, per se. But in the battlefield, the flu could be as deadly as a roadside bomb - which was why Levin had already used an influenza test kit to a.n.a.lyse the mucus sample swabbed from Al-Zahrani's nose. However, the test strip had shown a solid blue line that indicated with 99 per cent certainty that Al-Zahrani was 'negative' for both influenza A and B.

Not the flu? How could it not not be the flu? Or perhaps, not the be the flu? Or perhaps, not the common common flu, he'd thought dreadingly. That prompted him to unpack a second test kit recently made standard equipment for combat medics to simultaneously detect H5N1 avian flu and H1N1 swine flu. With a sterile swab stick pinched between the fingers of his right hand and a fresh test tube in his left hand, he slunk over to Al-Zahrani's bedside and inserted the swab's foam tip one inch into the patient's runny nose. flu, he'd thought dreadingly. That prompted him to unpack a second test kit recently made standard equipment for combat medics to simultaneously detect H5N1 avian flu and H1N1 swine flu. With a sterile swab stick pinched between the fingers of his right hand and a fresh test tube in his left hand, he slunk over to Al-Zahrani's bedside and inserted the swab's foam tip one inch into the patient's runny nose.

Crawford paused and c.o.c.ked his head sideways disdainfully. 'Couldn't pick his nose right the first time, Corporal?'

'Just need to run another quick test.' He twirled the swab tip around Al-Zahrani's nostril, pulled it out, and dropped it into the reagent solution that filled the bottom of the gla.s.s test tube. 'There. All done.' He retreated quickly and Crawford huffed before continuing on with his questioning.

Sitting at his makeshift lab table, Levin twirled the swab stick in the solution and pulled it out. Then he slid the coated test strip that came with the kit into the solution. The results would take ten minutes, so he noted the current time on his wrist-watch.

His left leg bouncing nervously up and down, Levin tried to focus on Crawford to alleviate his mounting anxiety. It seemed that Crawford was brushing away the concerns of everyone around him, including Jason Yaeger. After the tense exchange Levin had witnessed earlier, Crawford still hadn't called for the backup platoons Yaeger had sensibly demanded. If Yaeger hadn't been successful in breaking Crawford's blind stubbornness, Levin had little hope that the colonel would heed a request to have Al-Zahrani airlifted to the nearest hospital for proper treatment, which was what Levin's gut was telling him the situation might warrant.

He peeked down at the test strip, saw nothing. Checked his watch - five minutes left. He shifted his gaze back to Crawford.

Normally Crawford was cool and collected - a proven leader who performed best under pressure; a guy whose impressive career had placed him on every battlefront in the Middle East over the past two decades. Crawford's ostensibly prophetic insight into the mind of Islamic terrorists made him an indispensable a.s.set in Iraq. But everything Levin had witnessed thus far today was completely out of synch with the colonel he'd thought he knew. Crawford's behaviour seemed borderline schizophrenic. Even now he seemed in denial as he persisted in interrogating a man who was barely coherent.

Levin pa.s.sed his clinical eyes over Al-Zahrani again. Ethical concerns aside, he would prefer nothing more than to disregard Hippocrates' primary directive, 'above all, do no harm', and personally see to it that this most undesirable patient slowly choke to death on his own sputum.

Above all, however, Levin wanted to avoid at all costs Al-Zahrani unleashing a viral Trojan Horse on the platoon. The battlefield was a cesspool of bacteria. Even with decades of technological advances in trauma care, modern warfare was still plagued by more casualties a.s.sociated with biological infection than friendly fire and hostile gunfire combined. Though troops lived in close quarters to promote comradeship, that thoughtful arrangement also provided a perfect breeding ground for communicable diseases. Particularly since the troops didn't enjoy the luxury of daily showers or clean toilets.

With a steady flow of US troops moving back and forth between the Middle East and domestic military bases, the Department of Defense had gotten very aggressive in containing even the smallest of outbreaks. Prophylactic treatments for contagions ranging from flu to anthrax were mandatory for all troops deploying to the Middle East - six inoculations over an eighteen-month period, followed by annual booster shots. Yet these measures were far from perfect, especially when it came to the highly virulent influenza microbe, which played an endless game of 'gene swap' with animals and humans. The recent swine flu pandemic was a potent reminder of how easily influenza could mutate and render vaccines obsolete.

Another glance at the test strip. Two more minutes to go.

Levin tried to block out the distressing thoughts of Al-Zahrani infecting the troops with some mutated flu strain. Worse yet, the terrorist might already have infected a number of Iraqis during his clandestine movement from city to city.

In Iraq, spa.r.s.e terrain provided hardy, natural buffers that counteracted disease transmission. But one infected individual could easily ignite a lethal epidemic within one of the region's densely populated cities. A person infected in that city then travels to a virgin population in another city ... and from there, the dominos would keep falling. It was a sobering reminder that most wars in history - from the Mongolian invasion of the Roman Empire, to Hernando de Soto's conquest of the Americas, to Napoleon's attempt at world domination - had been determined not by military might and superior weapons ... but by germs.

Crawford was quick to label Levin a worry-wart. That was to be expected. Military types focused primarily on munitions and artillery, and needed constant reminding that the most potent threats of modern warfare were not armed militants with an eye on martyrdom. Crawford, in particular, was a diehard battlefield minimalist who believed that a marine could survive with only a Bowie knife. It took a lot of convincing that sensible preventive measures were not intended to soften Crawford's killing machine.

Even Crawford had learned the hard way that infectious disease should not be ignored. During a reconnaissance mission the previous summer, Crawford's platoon had been patrolling Iraq's southern desert, toting sixty to a hundred pounds of gear in scorching temperatures that reached 130deg Fahrenheit. Short on water rations, thanks to chronic logistical problems with contractors deploying Water Buffalo supply trucks, the troops had been forced to drink from untreated local water supplies that were teeming with harmful microorganisms. That led to widespread bouts of dysentery that practically debilitated the entire platoon. Naturally, Crawford wasn't affected since he'd had plenty of bottled water for himself.

'Stop worrying,' Levin told himself. He wiped his clammy hands on his pants.

Suddenly Crawford's growing frustration with the patient's hopeless condition hit its crescendo. The colonel yelled b.l.o.o.d.y murder for a full minute, then kicked over a crate and stormed out from the tent.

'Lunatic,' Levin mumbled. 'That guy is a walking pressure cooker.' He made eye contact with the Kurd, who shrugged, set down the marker and notepad, then made his way outside. Levin looked down at his watch to see that it was now thirty seconds over the ten-minute mark.

He looked down at the test strip, fully expecting to see a pink stain that would indicate that Al-Zahrani tested positive for swine flu or avian flu. His anxiety kicked into overdrive when he saw a single blue strip.

Negative?

48.

Reaching the top of the slope, Crawford caught his breath before summoning Staff Sergeant Richards from the cave entrance. 'How much longer till it's cleared?'

Richards pursed his lips. 'Maybe a couple hours,' he guessed. 'I'm pushing the men as hard as I can. It's too narrow in there to run a second line.'

'Push harder,' Crawford insisted. 'I want to find out exactly what they brought into that cave,' he reminded him.

'I understand.'

Crawford looked over to Jason Yaeger, who was hauling buckets from the last man on the chain team and dumping them down the slope.

Richards picked up on the colonel's preoccupation with Yaeger. 'He was on his phone again,' the staff sergeant told Crawford. 'Didn't seem to be talking to anyone ... just fiddling around. And before that, I saw him go into the other tunnel. Disappeared for a good fifteen, twenty minutes.'

'Nothing but trouble,' Crawford said, shooting Yaeger a dirty look.

'I heard he got up in your face in the tent.'

'Certainly did. That boy has a problem with authority.'

With finesse, Richards asked, 'Not to disrespect you, sir, but shouldn't we be moving Al-Zahrani out of here? I mean, it's not exactly safe-'

Crawford's eyes drilled into him. 'Don't you worry, Richards. Everything is under control. I know you're scared of the dark, but the sun will up before you know it.'

'Yes, sir.'

Yaeger had jumped off the line and was making his way over. 'Just f.u.c.king dandy,' Crawford moaned.

Staff Sergeant Richards wisely left the scene as Jason squared up with Crawford.

'Hazo tells me you weren't able to get anything out of Al-Zahrani,' Jason said.

'That's right,' Crawford confirmed. 'Not that it's any surprise. Doesn't need to be deaf to keep his mouth shut.'

'I suppose.'

'Find anything interesting while you were poking around in there?'

'Plenty,' Jason replied with defiant eyes. 'But something tells me it wouldn't be news to you.'

'Is that so?'

'Call it instinct.'

Crawford stood his ground. 'I call it a loaded accusation, Yaeger. And one should be very careful jumping to rash conclusions. Could get one in a world of trouble.'

'I agree. Just like I've already concluded that you didn't call for backup. Isn't that right?' He crossed his arms over his chest.

Crawford grinned smugly. 'That's my call to make, not yours,' he reminded him. Except this time, he was sure to provide a plausible rationale: 'As soon as that tunnel is clear, shouldn't take long to pull those other ragheads out. Then we'll be on our way. I'm guessing it might take another hour or so. About the same time it would take for a support platoon to get here. Besides, my men have been monitoring the airwaves and haven't heard a peep.'

'An hour hour?' Jason repeated. 'We don't even know what's behind those rocks. So how can you be so sure it won't take a lot longer?'

'Call it instinct. And let's face it, Yaeger,' he said with forced diplomacy, 'if there were miles of tunnel behind that rubble, Al-Zahrani wouldn't have been heading for the front door. We're close to extracting these sons of b.i.t.c.hes and you know it. You've done your part, now let me do mine.'

Jason studied Crawford for a few seconds. Something wasn't right. 'One hour,' he said.

Crawford nodded. 'If we're not done by then, you can make the call yourself. Call in the entire brigade for all I care.'

49.

Frozen to the spot, Lance Corporal Jeremy Levin stared at the test strip for five seconds, then over to Fahim Al-Zahrani. If Al-Zahrani was infected by a biological contagion and it wasn't influenza, identifying it might prove beyond the scope of his capabilities in the field. Back home, he'd refer this patient to an infectious-disease specialist, or the emergency room at Sinai-Grace Hospital. Here neither alternative was an option.

Suddenly, Al-Zahrani vomited all over himself, the tent instantly filling with a putrid smell. The two marines standing guard close to him immediately backed away.

'Jesus, Doc,' the first marine said. 'What the h.e.l.l's wrong with this guy? It's like he's dying or something.'

The second marine cringed while craning his head to get a better look at what came up from Al-Zahrani's stomach. 'Not sure what he ate last, but there's an awful lot of blood in there. That can't be good.'

Overwhelmed, Levin didn't respond. Could this really be happening?

'Doc? You all right?' the first marine asked.

'I ... I'm okay.' But this was a complete lie. If such a high profile captive died under his watch, there'd be h.e.l.l to pay.

'Aren't you going to give him some drugs or something?'

'I already did.' He hesitated. 'I'm just not quite sure what's wrong with him.'

'Crawford probably poisoned him,' the second marine said, deadly serious. 'Doesn't want those contractors to get paid.'

The second marine pointed his chin at the oozing wound on Al-Zahrani's hand. 'Hey, how about this: maybe he got bit by a snake? I've heard there're some really nasty vipers in these mountains. I think I might have seen one of them squirming around when we were clearing the rubble.'

Levin gave the comment serious consideration. Native to Iraq were six species of highly venomous snakes - five in the Viperidae family, or 'vipers', and one in the Elapidae family, or 'cobras' - most of which were common in the deserts and gra.s.slands. Iraq's northern mountains, if his recollection was correct, were home to the Kurdistan vipers and Persian Horned vipers, both highly poisonous. But since most troops took precautions to not antagonize snakes, and given the fact that vipers had a tough time biting through combat boots, he'd had no practical experience in diagnosing or treating snake bites.

He mentally recollected facts from the acclimation training he'd received prior to his first deployment to Iraq. Viper venom was a haemotoxin - primary target: blood cells. When bitten, a patient would develop severe pain and swelling around the bite. Left untreated, ma.s.sive internal bleeding could occur.

So maybe a snake bite couldn't be ruled out. But the most obvious symptom would be the wound itself, thought Levin, and the infected gouge in Al-Zahrani's hand looked nothing like the twin punctures left behind from snake fangs. Unless, perhaps, Al-Zahrani had ripped off the snake hard enough to tear away flesh. Even so, could venom act so quickly? Were Iraq's mountain vipers that that poisonous? poisonous?

'A snake bite,' Levin muttered. 'Maybe. The snake you saw ... did it have two horns protruding out from above its eyes?'

The marine was quick to respond. 'Nope.'

'What did it look like?'

'Maybe a metre long. Its skin was yellowish with big brown spots ... kind of like a giraffe.'

Kurdistan viper, thought Levin.

'Then there's something you can give him for that, right?' the first marine asked.

'Yes. Yes, there is.' Protocol dictated that snake-bite victims were to be stabilized in the field, then flown back to the nearest command base for treatment. Therefore, antivenoms for the region's snakes had become a standard provision, compliments of Israeli Intelligence.

Levin used his sleeve to wipe sweat from his forehead, then scrambled to open his medical case. After rummaging for fifteen seconds, he found the correct snake-bite kit. He quickly skimmed the directions, then used the kit's saline ampoules to reconst.i.tute the freeze-dried antivenom powder. He filled a syringe and hurried over to Al-Zahrani. He gave it a second thought, but said, 'I guess it can't hurt, right?'

'Go for it, Doc,' the second marine encouragingly replied with a wink and a nod.

Levin injected the antivenom into a thick vein on Al-Zahrani's forearm. Panic set in the moment Levin stood back to rea.s.sess the situation. Had he acted too hastily? If Al-Zahrani hadn't been bitten by a viper, would the antivenom exacerbate his condition? 'I'm not sure if this will work,' he told the marines. 'We've got to get him to a hospital, immediately.' He addressed the first marine, saying, 'You need to convince Crawford to transport him. Tell him what's happening in here.'

'I'll see what I can do,' the marine replied noncommittally, then hurried out from the tent.