Riker closed the trunk and leaned back against the car. When she joined him, his eyes shifted to the retreating back of Dale Berman. “What was that about?”

She set the laptop on the trunk of the Mercedes and opened it. “I told him I knew he was dragging out this case.”

“Well,” said Riker, “I guess the longer he drags it out the greater the glory. Some people just like to see their names in the newspaper.”

“That’s not it. He did everything he could to keep the media away from this case.” She powered up the laptop and turned the screen so he could see it. “You thought Dale Berman was just incompetent.”

“Well, yeah, but that’s true.”

She shook her head. “I told you the screwups were over the top-even for Berman. So I followed the money.”

Ah, Mallory’s all-time favorite. Trust her to find a money motive in the slaughter of little girls. He stared at the glowing screen of number columns. “What am I looking at?”

“Dale Berman’s payroll records. He’s been reporting fifty hours of overtime every week.” She pulled a notebook from her back pocket and pointed to a November date. “That’s when Berman takes early retirement from the Bureau. I found the paperwork in his car.” She turned back to the laptop screen. “Now look at these figures for earnings with overtime.”

Riker whistled in appreciation of the large sum. “Dale’s really building up his retirement fund.”

“You’re close,” said Mallory. “This has been going on for years. He started padding his paychecks after the Bureau buried him in North Dakota.”

“You see? I told you he was an idiot. That state only has a handful of people and some buffalo. Nobody does overtime.”

“And Dale worked in a satellite office-no oversight. That’s what triggered this audit.” Mallory diddled the keyboard to show him a new set of figures. “Lots of pressure-the auditors are coming. He has to explain the overtime. A federal payroll scam is worth five years in prison. So he makes a bogus file for Mack the Knife, and he backdates it.”

Riker shook his head in disbelief. “That’s good for another charge- falsifying government documents. More jail time. I told you he was an idiot.”

“No,” said Mallory, “he was a man with a high-maintenance wife and a field agent’s pay grade.”

“And he was stuck in a backwater office with no action, no overtime.”

“So he gave himself a bigger salary,” said Mallory. “That’s how it started, and then it snowballed. Berman can’t c lose out a bogus case with no results-not right after an audit. It has to look like an ongoing investigation. Then he gets posted to a Texas field office. He’s running it-all those eyes on him every day. More pressure. He can’t leave the bogus case with another agent in North Dakota. So he develops a false lead in the Texas jurisdiction. The overtime keeps rolling in, but he’s not doing it for the money now. He can’t stop. He only has two years to retirement, and he needs a real live serial killer.”

“And then he found Nahlman. She saved him.”

Dr. Magritte left the car at the junction, and he left his wallet in the middle of the road, the one that led west toward an unknown destination. He was following directions fed to him as he traveled. The knife in his pocket gave him no comfort, but the expectation of being found either dead or alive, this was a joyful prospect. His prayers carried no requests for an angel of deliverance. Send Mallory.

Mallory closed the laptop. “And now, thanks to Nahlman, he’s got a big inventory of bodies and evidence, more than enough to account for his time.”

“I got a problem with this,” said Riker. “Dale knew that warehouse morgue was gonna be opened some day. If not by Harry Mars then-”

“And the feds would find a hundred cartons of sloppy paperwork-all hard copy with missing files, fake reports, no times and dates for hunting and digging-nothing to match records with human remains. Berman only needed to drag the case out. He never intended to solve it. He would’ve retired in another six months. The case would get fobbed off on his replacement-along with the keys to the warehouse. The agent who replaced him would put everything down to gross incompetence.”

“And Nahlman could back him up on the incompetence,” said Riker. “She’s Dale’s worst critic.”

“Of course she is. Berman groomed her for the part.” Mallory let that settle in for a moment, and, when the poison had taken hold, she went on. “Even now that the Bureau’s onto him, he can still get away with it. Let’s say Harry Mars opens an investigation. Nahlman will testify that her boss had no idea what he was doing. If Harry asks her about the warehouse full of dead kids, she’ll tell him that’s no surprise, not to her. She’ll swear under oath that Dale Berman is just a garden-variety screwup. And he’ll still get his pension, even though people died on his watch. He never developed any of Nahlman’s leads because he didn’t w ant this case solved- not yet.”

“Okay.” Riker threw up his hands. “I’m a believer. Dale’s not just a screwup. He’s a sociopath. The little monster doesn’t c are who dies. You were right about everything.”

Mallory had her half-smile in place, the one that warned him to run while he could; he had seen it before, and he knew she was going to turn on him. Riker braced himself, hands spread flat on the trunk of the car. He had watched her grow up; he had loved her so long and knew her too well.

“And all this time,” said Mallory, casually offering him the stolen driver’s license of the Illinois LoJack tracker, “even before Savannah Sirus died, you thought I was a sociopath-a monster.”

Riker was bending over in the manner of a man who has just had his entrails pulled out and held up before his startled eyes.

“Now let’s talk about your friend Nahlman.” Mallory pulled a small blue velvet pouch from her knapsack and emptied it on the hood of the Mercedes. Tiny bones clattered across the dusty metal. “I found them in Nahlman’s g love compartment. Or maybe you think I’m lying?”

Make it stop!

He shook his head. She was telling him that it was time to choose up sides, her side versus the rest of the world. “You’re my partner,” he said. “I’m with you.”

“Good.” Mallory scooped up the little bones and put them back into the pouch. “Now it’s time to arrest Dr. Magritte.”

“What?”

The FBI moles had become engaged behind the travel plaza’s garbage dumpster.

One mole gently caressed the face of the other and said, “I love you.”

Behind them, startling them, a man’s voice said, “How nice. But where’s Dr. Magritte?”

The moles spun around to face the detectives from New York City, Riker and Mallory.

“Tell me you didn’t lose that old man,” said Detective Mallory, “not again.”

One of the moles said, “Oh, shit.” And the other one was only thinking it.

“ Yes, I see it,” said Paul Magritte to his caller. “The turn is just up ahead.” This was a lie. His car was parked, and he was walking back to the juncture of dirt road and hard pavement. He spread an open book on the ground. This might be the most useful thing he had ever done with it. Looking down the unpaved road, he could see for miles and miles, and so could the killer of children. This would be the last time he dared to stop. Dr. Magritte held the cell phone to his ear and offered more reassurance that he was quite alone. In turn, he received the good news that the kidnapped parent was still alive. And was this story believable? No. Up ahead there was only death on two legs, no heart, no soul. But this time, he would see it coming, and soon-so would everyone else.

He returned to his car and continued to follow the directions of a coldly mechanical voice that conjured up fat black flies inside his ear. He knew his final destination would be some distance away. The man would want privacy for what he planned to do to his old doctor-his former priest.