“No,” she said, trying to desperately to pull away from him. “You can’t do this. Please.”

“Of course I can do this,” he returned calmly. “I can do anything I want. Surely you’ve heard of waterboarding. Everyone has these days. If it’s good enough for Islamic terrorists, it’s good enough for you, and it’s pretty much foolproof. When we’re done, it’ll work the same way for me that it does for the CIA. In order to keep from drowning, you’ll tell me everything I want to know.”

“You’ll never get away with it,” Ali said. “They’ll find you. They’ll put you away.”

“No, they won’t, my dear. I’ll be long gone before anyone ever finds you or your friend out there. Long gone.”

Staring down at the bathtub full of water, Ali Reynolds knew one thing that her captor couldn’t possibly know: She was petrified of water; terrified of drowning. As a teenager, she had nearly drowned on an outing to Oak Creek’s Slide Rock. She had knocked herself out on a rock and gone under. She had been unconscious when one of her friends pulled her from the water and pumped the water out of her chest. She had awakened coughing and choking.

All her adult life, she had avoided swimming pools and hot tubs, and wading in the ocean was totally off limits. She simply couldn’t bear the idea of being at the mercy of those unpredictable waves. She had enrolled Chris in swimming classes early because she had wanted him to be water-safe. She had wanted him to be able to save himself rather than looking to her for help. Only in the last few years, in the safety of this very room, had she forced herself to overcome that fear by facing it-by trying the occasional bubble bath.

But now the tub had turned into Ali’s worst horror. Staring down at it, she knew what would happen. Once he forced her head underwater long enough for the water to gush into her lungs, she would tell him whatever he wanted to know when she came back up. She would do anything to keep it from happening again-to keep him from doing to her what he had already done to Leland Brooks.

Who could already be dead, she reminded herself. Who told this monster nothing because he had nothing to tell.

She knew that Leland Brooks’s fate should have been enough to make her capitulate right then. Maybe that was what her captor had in mind-that simple dread would make her weaker. To her astonishment, it had exactly the opposite effect. A pulse of absolute abhorrence shot through her, filling her body with a physical strength she didn’t know she had.

Ali fought him then, fought him tooth and nail, biting and scratching in a desperate attempt to maim him, to knee him in the groin or gouge out his eyes. He outweighed her, though. He was taller and far stronger. She knew going in that no matter how hard she fought, eventually, she would lose. That was inevitable.

Yes, Ali thought as he forced her down on her knees beside the tub and pressed her face toward the water. Dreading what was coming, she took one last desperate gasp of air, filling her lungs as he grabbed the back of her neck and plunged her head underwater.

Dave Holman’s phone rang again as he approached the exit at Cordes Junction. “Is this Detective Holman?”

“Yes. Who is this, and how did you get my number?”

“My name is Simpson-B. Simpson. I run an Internet security firm called High Noon. Ali Reynolds is one of my clients, and I have access to her files. I found your numbers listed in her contact list. Have you heard from her?”

“From Ali? Not in the last little while,” Dave replied. “I missed a couple of calls from her earlier this morning, but when I tried calling back, she didn’t answer. Why? What’s up? Is something wrong?”

B. paused before he answered. “I know the two of you have a lot of history,” he said tentatively. “And this would probably be better coming from her, but…”

“What would be better coming from her?” Dave asked impatiently. “What are you talking about?”

“I have a name for you,” B. said. “A name for the case you’re working on. The man’s name is Winter-Dr. Peter Winter. I just Googled him. He’s an ER physician at Phoenix General.”

“Which case would that be?” Dave asked.

“Morgan Forester’s murder,” B. answered.

“And how exactly is this Dr. Winter supposed to be related?”

“Earlier this week I discovered that a worm had taken up residence in Ali’s computer. I was able to neutralize it before it could do any irreparable damage, and we assumed it was just a case of attempted identity theft. A little while ago, Ali brought me a pair of thumb drives Bryan Forester had given her for safekeeping. They contained copies of files from his computer and from Morgan’s as well. The same worm had been planted in the thumb-drive files. If they had been opened on a computer with access to the Internet, those files would have been destroyed, the same way the files were destroyed on the two computers you picked up on your search warrant. Once again, I’ve neutralized the worm before it was able to do any damage.”

“Wait,” Dave said. “You’re saying the same worm that was on the Foresters’ computers was also on Ali’s? How can you be sure?”

“How does an epidemiologist know one strain of flu from another?” B. returned. “By analyzing the makeup of the virus that causes each individual case. This is the same thing. All three worms come from the same basic source-in other words, from the same programmer. Had the worm actually been unleashed, the end result would have been slightly different. For instance, the Trojan in Ali’s system was set to simply crash the computer. The worm on the Foresters’ computers was set to overwrite files. But it’s still the same guy.”

Dave’s heartbeat quickened. The guy was a doctor? That might explain the single unexplained needle mark the ME had found at the back of Morgan Forester’s neck, in a spot where it couldn’t possibly have been self-administered. And now there was another crashed computer? Anxious not to give anything away, the next time he spoke, Dave was careful to keep his voice and his questions firmly neutral. “What does this Winter character have to do with any of this?”

“That’s the thing,” B. said. “I gave Ali a choice. I told her we could pursue legal recourse, or we could go after the guy on our own.”

“Don’t tell me,” Dave said. “I already know where Ali Reynolds came down on that one.”

“Yes,” B. agreed, “you do. So we sent the guy a worm of our own and picked up all the files from his PC in the process.”

“In other words, you used an illegal wiretap. Evidence from that wouldn’t be admissible in a court of law.”

“Maybe not,” B. agreed. “But it’s good enough for an anonymous tip. Most of Winter’s files are encrypted. I’m working on breaking the code. So far I haven’t had much luck, but I did come across one unencrypted file-one he somehow missed: his initial licensing agreement with Microsoft from back when he first purchased the computer. That’s where I got his name. He’s apparently connected to an Internet dating site called Singleatheart. Ali’s computer was infected after she registered at that site. I believe Singleatheart may also have some connection to the Forester murder.”

Listening intently to every word, Dave fought to avoid betraying his eagerness. Maybe the files Ali had offered him were the Foresters’ real files after all. If someone besides Bryan had tried to destroy them, maybe Dave had missed something. It was possible that this Winter guy was in on everything with Bryan Forester. It was also possible Dave was wrong.

As the Cordes Junction exit came up, Dave switched on his turn signal. “All right,” he said. “I’ll see about looking into this all this, Mr.-” He paused. “What did you say your name was again?”

“Simpson. B. Simpson.”

Once he was off the exit ramp, Dave pulled over. “And how do I get back to you?”