Vail said, “Chief, if you have a desk somewhere with a computer, I’ll start on those tips. And a map of the area if you have one.”

“Great. And I’ll make sure you get copies of anything new that comes in.”

Kate said, “Tim, could you give us a minute?”

“Sure.” Mallon walked out and shut the door.

She put her hand on his arm. “I appreciate your keeping me from looking like a fool.”

“No use both of us feeling that way.”

She started to say something, and he placed his hand over hers. “It’s okay, Bannon.” He leaned forward and whispered in her ear. “I really do hate New Year’s Eve parties.”

He turned to go, and she said, “And don’t think you can sneak out of here without saying good-bye.”

Vail gave her a silent but formal salute.

While Kate started making phone calls, trying to track down agents from the Behavioral Science Unit and the Washington Field Office, the chief led Vail to a detective’s desk and showed him how to access the department’s different databases. He settled in and started reading the tips.

Unlike the officers and detectives, Vail had the luxury of looking at them from a different perspective. The Reston Police Department had to investigate all the tips offered. Vail didn’t. So he was able to start making judgments about the callers and the individuals they were reporting on.

He checked each suspect’s name in the computer to see if there were any previous contacts with the department. He also checked the callers’ names—if they gave one—to see if they were chronic complaint makers, which could lessen the priority of their information. After reading all the tips, he hadn’t found any he considered worthwhile. That wasn’t necessarily a bad thing. Tips were a double-edged sword. While they frequently solved a case, a false lead that looked promising could be distracting, take the entire department in the wrong direction, and burn precious time. A uniformed officer walked in and asked, “You Vail?”

He stood up and shook hands. “Steve, yes.”

The policeman put three more tips on the pile. “These are from the last half hour. We’re also starting to get photos from the races e-mailed in. Do you want me to forward them to this computer?”

“I’d appreciate it.” Vail picked up the newest tips. “Anything interesting?”

“Nothing we’ll need lights and sirens for.”

Vail continued searching the names through the computer. Still nothing jumped out at him. When he finished, he got up and wandered around until he found someone who directed him to a coffeepot. He filled two cups and went looking for Kate.

The chief’s office was small but well ordered. Bureau memorabilia neatly lined the wall behind the desk. Kate was on the phone, so Vail placed the cup in front of her and sat down.

She rolled her eyes as she listened to the latest excuse as to why nothing could be done tonight, taking a sip of coffee. He watched her and was reminded of one of the things that he liked most about her: She thrived on work. The more difficult the case, the more focused she became. He listened as she urged cooperation. Her tone was compelling, and Vail couldn’t tell whether it was actually cajoling or threatening or both. Finally she hung up midsentence. “Come January second, there’ll be a number of Bureau employees who are going to be at least as unhappy as I am right now.”

“Makes me almost sorry I won’t be here.”

She gave him a small, sad smile through pursed lips and leaned back in her chair. “Anything in the tips?”

“Not so far. The photos are starting to come in, though.”

“Do you actually think we’d get that lucky?”

“I just thought it would be better to have them than not. You never know, something could come up later that a photo might help with,” Vail said. “And the pendulum is due to swing the other way.”

“What pendulum?”

“What most people call luck. To me it’s nothing more than a temporary statistical aberration. So far tonight I’ve had an unbelievable amount of bad luck, so maybe I’m due.”

“Sorry.” She stared at him for a moment before taking another sip of coffee. “Do you know what I find to be the most confounding thing about you, Steve?”

“That doesn’t sound like a question a judicious person would want to hear the answer to.”

“That you’re so good at this and refuse to do it for a living.”

“Don’t start.”

The chief knocked on the door and came in. “Sorry. We may have something. From the sex-offenders list, there’s one, a Frank Dillon, who kidnapped and molested a six-year-old boy twelve years ago. He was paroled in September, and he lives in Vienna, which is fairly close. We got ahold of his parole officer, who said Dillon recently changed his residence and stopped reporting. As far as the PO is concerned, he’s AWOL, and he’ll violate him if we want. We just made a call to his last employment, and he was at work until noon today, when he just up and quit. He did leave a cell-phone number so they could call him when his last check was ready. We’re going to try to put the grab on him. You guys want to come along?”

“Sure,” Kate said. She looked at Vail.

“You won’t need me, Chief. I’m a civilian. If something happened, my being there would just give some defense attorney a little more smoke to blind a jury with. Besides, somebody should stay here and keep checking on the tips in case this guy doesn’t work out.”

Kate turned to the chief. “Tim, I’m coming with you. I’ll be there in a minute.” Once Mallon left, she said, “I seem to remember something about you always keeping the best lead for yourself. That’s not what this is, is it?”

“Like the chief said before, we’re talking about a child’s life.”

“Sorry.” She took out her car keys. “When’s the last time you ate?”

“Ah . . . breakfast.”

“Please go get something. Those tips won’t miss you for fifteen minutes. And I really do appreciate this, Steve,” she said. “Hopefully, this won’t take long. Hopefully, this is our guy.”

When Vail got back to the detective’s desk, there were four new tip sheets. He checked the e-mails and was surprised to see that the department had already received eleven messages with photos attached. The lists of runners for both races had also been forwarded. He opened the first set of pictures; they were all of the adult race. He scanned the faces, looking for the Walton boy. There was a subtle difference in quality between the phone pictures and those taken with cameras. As long as they didn’t have to be blown up to provide detail, it really didn’t matter.

Because of the cold weather, most of the runners were bundled up, especially the children. The kids’ race seemed more crowded, with all those parents waiting at the finish line. Vail went through them three times, trying to spot Joey Walton. According to the runners’ list, the sandy-haired seven-year-old was number 034. There were a couple of possibilities that looked like him physically, but the numbers pinned to their chests indicated otherwise.

An angry knot of frustration turned in Vail’s stomach, and he started to regret not going with Kate. The fugitive pedophile sounded like a decent lead. If it wasn’t him, Frank Dillon had certainly picked an odd time to stop reporting to his parole officer and disappear. By staying behind, Vail knew he was trying to make something happen, create some insightful discovery. Apparently he did miss the chase, but at the moment it seemed little more than useless self-indulgence. Or maybe he just wanted to impress Kate.

He started to get up to refill his coffee when the e-mail tone sounded again. There were three new messages, which had eight additional photographs attached. He took his time and looked through them twice. Then, realizing that he had no idea what he was looking for, he got to his feet and waved at the monitor in disgust. He was trying to look at the case from too many angles, a sure way to not find anything.