“He was tryin’ to flag me,” the driver said, “but you were first. You want to give him a ride?”

Keller was tempted, but only for an instant. “No,” he said. “I want you to wait here, and when he gets a cab I want you to follow it.”

“Good tip, right?”

“Fifty bucks.”

“Plus the meter?”

“You drive a hard bargain,” Keller said. “Here we go. No, hang on. Wait a minute.”

A cab had stopped, but pulled away after a brief conversation. “Maybe he didn’t like the guy’s looks,” the driver suggested.

“Why not? He’s dressed decently.”

“So maybe your guy didn’t like the cabby’s looks. Maybe the cab’s a mess, maybe some drunk puked in it.”

“Maybe he wanted to go to the airport,” Keller thought aloud.

“No,” the cabby said. “Brooklyn, maybe. Here’s another one stopping for him. Well, it’s his lucky day. He’s getting in.”

“Don’t lose him,” Keller said, “but don’t get too close to him, either.”

“You got it.”

Keller sat forward, his eyes on the cab in front of them. After a moment he said, “Why not the airport?”

“No luggage.”

“Maybe he travels light.”

“You figure he’s going to the airport?”

“It’s possible.”

“Which airport, you happen to know?”

“I could narrow it down to three.”

“ La Guardia and JFK’s okay, but I get double the meter if it’s Newark.”

“Double the meter,” Keller said.

“For out of town.”

“Plus the fifty we agreed to.”

“Plus the fifty, and plus the tunnel toll.”

Keller was silent, watching the cab in front of them, and the driver took it for resistance. “You want a cheap ride to Newark,” he said, “they got a bus at Port Authority’ll take you there for ten, twelve dollars. No tip and no tolls, but don’t point out some asshole with a hat and expect the driver to follow him for you.”

Keller told him the money wasn’t a problem. Anyway, it didn’t look as though they were headed for Newark. They were on Eighth Avenue now, headed uptown, and they’d passed the turnoffs for both the Holland and Lincoln Tunnels. If the killer’s destination was one of the other two airports, what was his cab doing this far west?

“Here we go,” Keller’s driver said, slowing to a stop. “Hotel Woodleigh, a touch of Europe in Old New York. Didn’t I tell you he wouldn’t go to the airport without luggage?”

“Your very words,” Keller said.

“He’ll be out in a minute, carrying a suitcase. Or more likely it’ll have wheels on it and he’ll be rolling it. Those Rollaboards are taking over the world.”

“He’s paying off his cab.”

“So?”

“So I think he’s got the right idea,” Keller said, and drew three twenties and a ten from his wallet. The cabby seemed satisfied-he damn well ought to be, Keller thought-but would have preferred to stick around for the rest of the operation.

“He’ll be out in five minutes, and you’ll wish you had me waiting,” he said. Keller figured he was probably right, but all the same he got out of the cab and walked into the hotel lobby.

He found a chair where he could watch both entrances and the bank of elevators, but barely got settled into it before he sensed that someone was taking an interest in him. He looked around and caught the desk clerk looking his way.

A few hours from now, he thought, a man like himself, presentably dressed and groomed, could sit for an hour with a newspaper without attracting any attention. But at this hour, with the sky still dark and the city as close as it got to sleep, he was conspicuous.

He walked over to the desk, took out his wallet, flipped it open as if to show a badge. “Fellow who just came in here,” he said. “Had a hat on.”

“You know,” the clerk said, “I had a feeling about him.”

“Where’d he go?”

“To his room,” the clerk said. “Well, to somebody’s room. He went right up on the elevator. Didn’t stop at the desk for his key.”

“You happen to know the room?”

“Never saw him before. I wasn’t on when he checked in. If he checked in.” He leaned forward, lowered his voice. “What’d he do, anyway?”

He killed a friend of mine, Keller thought. “I’ll just have a seat,” he said. “I don’t know how long he’ll be, but I wouldn’t want him to slip past me. You don’t have newspapers for sale, do you? So I don’t look too obvious sitting there.”

The papers hadn’t come yet, but the clerk managed to find yesterday’s Times. Keller didn’t offer to pay for it, figuring a cop wouldn’t. He sat down with the paper and tried to look interested in it.

At first there was no activity at all, but then as dawn approached, the elevator would open every few minutes, and someone would emerge from it and head for the desk to check out. Some looked tired, others looked wide awake, but none looked like the man who had paid Maggie a visit. He kept an eye on the hotel entrance, too, and now and then walked out onto the street for a quick look around. One time he saw a fellow in a cap and windbreaker, caught a quick glimpse of him entering a deli across the street.

Roger, he thought, and tried to position himself so he could watch the front door of the deli and still keep an eye on the hotel lobby. His eyes darted from side to side, it was like watching a tennis match, and then the man in the cap and windbreaker came out of the deli with a plastic bag in each hand, and a frontal view made it clear it wasn’t the man he’d seen on Crosby Street. This guy was shorter and heavier, with a big gut on him, and Keller had a hunch the shopping bags each held a six-pack.

He returned to the lobby, settled in with the paper. And, just a few minutes later, he almost missed the guy in the hat.

That’s because the sonofabitch wasn’t wearing a hat this time. Four men got off the elevator, all bareheaded, all wearing suits and ties, all carrying briefcases. One walked to the desk, while the other three headed for the street. Keller looked down at his newspaper, then looked up suddenly. He hadn’t recognized the man, but he recognized the walk, the way the guy moved. He went out after him, and there he was, getting into the first cab at the taxi stand. No hat, and he was wearing the mustache again, and his hair was blond and shaggy.

He was leaning into the cab, and Keller got so close he could have reached out and touched him. He had the momentary urge to do just that, to spin him around, grab hold of his necktie and throttle him with it. The impulse startled Keller, and of course he didn’t act on it, nor did it keep him from hearing what the man told the driver.

Keller watched the cab pull away, then got into the one next in line. He got in back, made himself comfortable. “Newark Airport,” he said. “Continental Airlines.”

Newark was a hub city for Continental, and the airline had a whole terminal for itself and its code-share partners. Keller sort of liked the idea of partner airlines, hanging out together like the costars of a buddy movie, sharing a secret code. What he liked less was the number of gates Continental had. He didn’t see his man in the ticketing area, and had to assume he already had his ticket and had proceeded directly to the gate.

But which gate? There were dozens of them, and it wasn’t as if he could page the guy. He had to go from gate to gate until he spotted him.

The woman in front of him at Security kept setting off the metals detector, and the delay, only a matter of seconds, drove him nuts. It had been a mistake, he told himself, to give the cabdriver the destination and let it go at that. He never should have let the man out of his sight. Of course it was easier this way, and they might very well have lost the other taxi in the tunnel traffic, but now he was scurrying from gate to gate, scanning the passengers, trying to move as quickly as he could without making himself conspicuous, and where the hell was the sonofabitch, anyway?

And he almost missed him again. Because he wasn’t a blond anymore, he had short dark hair, and the mustache was gone. And he’d taken off his tie, which meant Keller could forget about choking him with it, and instead of the suit jacket he was wearing a windbreaker.