Then he took in the subtle details and noticed her lips were blue and her face an unnatural white. Her body quivered with uncontrollable paroxysms. He looked deeper into the cabin. Water completely covered the small room up to the level of the bed frames. One mattress floated free while the woman kept the other anchored with her weight. Yet even her refuge hadn’t remained dry, and neither had her clothes. With her kneeling on the mattress, her weight formed a depression that pooled with seawater. No doubt her feet were soaked as well. Unable to know how long she’d been in this condition, he was certain she’d be hypothermic soon.

Juan removed his regulator and mouthed, “Are you all right?” The seawater against his lips was bitterly salty, confirming his earlier supposition about how the Avalon had delayed her plunge to the bottom.

She gave him a flat stare as if to say he was nuts to ask, given the circumstances, then nodded to tell him she wasn’t injured. He pointed at her and held up a finger, then pointed to other places on the ship, holding up more fingers. It took her a moment to realize he was asking if there were others with her. She shook her head sadly. Then she held up a finger and disappeared for a moment. When she returned she had a pad of paper and a black marker. Her hand shook so much her writing was barely legible. “I’m the only one. Can you get me out?”

Juan nodded that he could, although he had no idea how. They could attach lines from the Oregon’s cranes to the research vessel and try to haul her to the surface, only the cranes had nowhere near the power to deadlift a sinking ship, and if they got the balance wrong, she could tilt and fill even faster than she was now. However, it would be worth getting some lines down to the Avalon so they could at least stabilize her for the time being.

The other divers reached Juan. He wrote out instructions on a slate one of them carried and sent the man back to the Oregon. He turned back to the trapped woman and winked. She wrote something on her pad and held it to the glass. “Who are you?”

He wrote out his name. She flashed him a look of frustration and wrote “Are you with the navy?”

Uh-oh. How could he explain their presence? He wrote back that he headed a private security company hired to bring the pirates to justice. She seemed satisfied. He asked her to describe where water hadn’t yet flooded the Avalon. She wrote that the bridge deck was flooded and the bilge and engine room. Water had been climbing her deck for the past twelve hours. He asked if there were any exterior doors that he could open that would only flood a small room, an antechamber of some sort that could be isolated from the rest of the ship.

She wrote that she wasn’t sure, then fell back onto the bed. Water welled up through the mattress around her backside and shoulders. The woman didn’t seem to notice or no longer had the strength to do anything about it. Juan pounded the butt of his dive light against the hull to rouse her. She opened her eyes but barely registered his presence. She was slipping away. He pounded his light again, and the woman crawled to the porthole once more. Her eyes were glassy, and her jaw chattered like she was holding the business end of a jackhammer. He couldn’t get her out without her help, and she was maybe five minutes away from unconsciousness.

“What is your name?” he wrote.

She stared at the words for a moment then mouthed something Juan couldn’t understand. He shook his writing slab to remind her how they were communicating. It took her twenty seconds of intense concentration to write “Tory.”

“Tory, you must stay awake!!! You sleep, you die. Is there a small room you can seal that has an exterior door?” He was afraid she was too far gone to understand the question, but her shoulders suddenly straightened, and she managed to clamp her jaw tight. She nodded and began to write. It took four minutes by Cabrillo’s stainless Concord chronograph because she had to erase many of the words and start over.

She finally held her notebook to the porthole. The letters looked like a child’s first attempt. She had written, “Tne att port doon one dek op opons to a stoinwll thot can be sealecl.” It took Juan another precious minute to decipher the illegible scrawl. “The aft port door one deck up opens to a stairwell that can be sealed.”

“You must go there and seal yourself in. Do not leave, no matter what. Trust me.”

Tory nodded and heaved herself off the bed. As she stood in the knee-deep water, agony etched itself across her features. Juan could almost feel the icy fingers of cold cramping her muscles and sending jolts to her brain. She lurched across the room, lost her balance, nearly caught herself against a bulkhead, then fell heavily. If he could have squeezed through the porthole, Juan would have done so and gathered her up in his arms. As it was, he hung helplessly in the water as Tory slowly dragged herself to her feet. She was drenched. She staggered to the door without a backward glance, moving stiff-limbed like a zombie in a horror movie.

As soon as she was out of sight, Juan swam up to find the door she’d described. As he cleared the rail he saw four other divers working to attach a cable sling to the Avalon’s stern bollards. They had set up big underwater lights and worked efficiently in their glare. He imagined a team doing the same fore. The ship had now settled to a hundred feet. Even if the cranes couldn’t lift the research vessel, having her secured to the Oregon would prevent her from sinking any deeper for a while.

But depth wasn’t the problem. Tory’s endurance was.

Unbeknownst to Cabrillo and his crew, the Avalon had large holds both fore and aft that stretched from her bilge to her main deck and almost the entire breadth of the ship. So far, they had remained dry, thanks to tightly dogged hatches and servo-controlled louvers on the ventilation system that sealed it nearly airtight. It was their buoyancy that aided in keeping the survey ship from free-falling into the depths. While Juan was scrutinizing the door, one of the tightly closed vents began to buckle under the increasing pressure of water that was bottled within the ventilation ducts behind it. A flat jet of water sprayed from a gap between two of the louvers. It fell in a fine mist almost all the way across the hold. The slit between the louver’s metal fins was tiny, and only a few gallons per minute entered the hold — but every second saw the gap widening, and it was only a matter of time before the louver failed entirely, and a three-foot-square column of water roared into the hold.

The door, Juan noted, was a solid slab hinged from the outside. He could turn the handle freely once he’d removed a steel clamp that had been locked to prevent anyone from escaping during the initial raid. Only the pressure of the surrounding water kept him from drawing it open. To do that he needed to equalize the pressure on both sides. And to do that, he had to flood the antechamber on the other side with Tory trapped inside. It was a straightforward concept, and while Tory was in for the fright of her life as the room filled with water, Juan would have her out and breathing off a spare scuba tank before she was in any real danger.

He motioned over one of his divers and wrote what he needed on his slab. This man wore a full helmet with an integrated communications system that allowed him to talk with the dive master aboard the Oregon. Juan tapped the beat of “Shave and a Haircut” on the door while he waited for both Tory and his delivery from the ship. Waiting for either was interminable, but when the basket of tools and dive equipment was lowered from above and Tory still hadn’t arrived, Juan began to fear the worst.

Being trapped anywhere with the bodies of her friends littering the hallways was bad enough. Adding to the psychological stress was the fact that her prison was a hundred feet underwater and continuing to sink. It was amazing Tory hadn’t gone catatonic days ago. She was frightened, near hypothermic, and now soaking wet. Did she have it in her to reach the antechamber and remember to seal the room from the rest of the ship?