Kurt wasn’t sure where exactly the Black Stump was, but it sounded far away. Like a trip to Siberia only hotter.

“I remember the drill,” he said. “You want me to sign something? See a hypnotist to forget this ever happened? That’s fine too. Just show me the way out, and I can head to the beach like I intended. But you might want to check your own ranks for a leak because someone knew this little meeting of yours was going down.”

Hayley and Bradshaw exchanged a glance. Something unspoken passed between them.

Bradshaw turned back to Kurt. “Not likely,” he said with a smug look on his face, then changed subjects. “But since you’re here, maybe you’d care to offer your professional opinion.”

“On what?”

“Start with the dead man’s last word: Tartarus. Does that mean anything to you?”

Kurt looked at the setup once again. They were prepared to digest a lot of information. At least three analysts were on-site, plus Bradshaw. Whatever they were hoping for, it came in short. Way short.

“Only what I told Hayley,” he said.

“We’re dealing with a threat to Australian national security,” Bradshaw insisted. “Maybe even to other countries. We have four dead contacts, two before this event. One of them led us to a shipload of exotic mining equipment. You said Tartarus was underground.”

“That’s right,” Kurt said. “In Greek mythology.”

He glanced at the desk where the laptop was. “As you’ve no doubt discovered, it’s a mythological prison for the gods. But unless you know something I don’t, it’s not real. Whatever that guy was trying to tell you, I doubt he meant it literally. Tartarus is probably a code word or a cipher for something. Maybe related to the papers he gave you.”

Bradshaw took a second to digest this and then waved Kurt over to the conference table. “You claim to be an engineer. These look like schematics to me. You see anything here that might ring a bell?”

Kurt studied the cryptic papers. There was so much blood on them, the writing was obscured and smeared in places. What he could see looked like gibberish. He saw complex equations populated by symbols he didn’t recognize. The second page was definitely part of a schematic, but it seemed to describe a circular-shaped dome.

“Afraid not,” Kurt said. Despite his earlier guess, he couldn’t imagine a single word unlocking the clutter he was looking at.

“What about the boat?” Bradshaw asked. “Did you see anything in it before it burned? A backpack? A suitcase? A computer?”

“Is that what they were bringing you?”

“Just answer the question.”

“No,” Kurt said, “I didn’t see anything like that.”

“What about the driver?”

Kurt’s mind drifted back to the scene on the promenade. “He asked me to leave him and help this guy. He called him Panos.”

“That’s it?”

“We didn’t exactly have a long conversation.”

Hayley looked away sadly, and Bradshaw sighed with disappointment. “Well, you’ve been a tremendous help,” he said sarcastically.

“He did save my life,” Hayley pointed out.

“That he did,” Bradshaw agreed, speaking with a note of humility in his voice for the first time. He stepped toward the door. “Sorry to be so nasty, Mr. Austin, but it’s been a damned awful day. Enjoy your vacation.”

“Hold on a second,” Kurt said.

His mind was drifting back to the incident. He couldn’t recall any luggage in the boat or anything else out of the ordinary except that he remembered Panos wincing in pain when he was dragged from the boat. He recalled the odd way the man’s fingers had curled up and how he struggled to walk. There was something strange about his hunched-over appearance as he lumbered away from the boat. Something familiar too. Kurt had seen that gait before.

“That guy was your informant?”

Hayley went to speak, and Bradshaw stopped her.

“Come on,” Kurt snapped, “either you want my help or you don’t.”

“The dead men were couriers,” Bradshaw said reluctantly. “Bringing us something.”

“Do you know where they came from?”

Bradshaw shook his head. “If we knew that, there would be no need for this lovely conversation.”

“I suggest you start looking underwater,” Kurt said, “because that man was suffering from DCS.”

“DCS?”

“Decompression sickness,” Kurt said. “Bubbles of nitrogen in the joints. It causes horrendous pain and a hunched-over appearance — if the patient can even walk, that is. You get it from deep, prolonged diving, then surfacing too quickly. Normal treatment is one hundred percent oxygen and time in a hyperbaric chamber to force the gas back into suspension. But wherever this guy came from, I’m guessing he didn’t have the time to go back down. Kind of hard to do when you’re running for your life.”

Bradshaw all but snickered. “He’d just been in a crash, playing stuntman without a seat belt or a helmet. More likely, he was injured in the wreck.”

“He wasn’t limping,” Kurt noted, “he wasn’t favoring one side. He was bent over like the Hunchback of Notre-Dame and unable to straighten up. Those are the most typical effects of a disease commonly called the bends.”

Bradshaw seemed to be considering Kurt’s guess. He sucked at his teeth and then shook his head. “Not a bad thought,” he said, “but here’s why you’re wrong.”

He pointed to a brownish red smear on the bloodstained papers. It was oddly iridescent under the light.

“He was covered in this,” Bradshaw said, “every pore, every fiber of his clothes. So was the last courier we found dead.”

“What is it?”

“It’s a type of soil, called a palaeosol,” Bradshaw explained. “Common in the outback. Not found underwater. If it tracks with the other guy, it’ll contain a mix of heavy metals and various toxins, including traces of manganese and arsenic. Which tells us these guys are operating in the desert somewhere. Not from a submarine.”

“He could have been in a lake and gotten dirty afterward,” Kurt pointed out.

“Have you ever been to the outback?” Bradshaw asked. “The lakes out there are mostly transient. Even during the rainy season — which it is not right now, by the way — they’re shallow and wide. Like your Great Salt Lake.”

Kurt was stumped. “Don’t know what to tell you,” he said, “but I’d stake my reputation on it. That man came up from a depth where he was exposed to great pressure.”

“Thanks for your opinion,” Bradshaw replied. “We’ll be sure to check into it.”

He waved a hand toward the exit.

“So this is what it means to be shown the door,” Kurt said.

Hayley looked as if she’d have preferred to leave with him. Kurt felt differently about her now. A damsel in distress. He wondered once again what her deal with Bradshaw might be.

“Good-bye,” she whispered sadly. “Thank you.”

Kurt hoped it wasn’t quite final. He guessed that suggesting as much would annoy Bradshaw. A win-win situation.

“Until we meet again,” he said. And then he stepped out through the door and left her and Bradshaw behind.

Two hours after the incident, Kurt found himself back in his suite at the Intercontinental Hotel. He’d taken a shower, sent a long e-mail to NUMA headquarters, and finished a tumbler of scotch before climbing into bed.

Forty minutes later, he was still wide awake, staring at the ceiling and listening to the hum of the air conditioner. The events played on an endless loop in his mind. As they did, the questions chased one another in circles.

What was the ASIO dealing with? Why would a man covered in desert dust also be suffering from decompression sickness? And what part was Hayley Anderson playing in all of it? She seemed to be there by her own choice, but she didn’t seem happy about it.

Despite a little voice that told him to leave it alone, Kurt found he couldn’t let it go.

He glanced over at the nightstand. He’d covered the bright face of the alarm clock with a towel to keep the light out of his eyes, but his Doxa watch was resting beside it. He scooped it up, checked the luminous hands, and realized it was almost two o’clock in the morning.