“Anybody with the government got a discount, so let’s get a list of any customer who paid full price.”

Sachs pointed out, “But like you just said, it could have been borrowed. It could’ve been bought with cash in a store, could’ve been stolen.”

“Maybe, but not many retail outlets carried it. Most sales were online. As for borrowing it, just because something is unlikely is no reason not to pursue it. I don’t think we have much choice, anyway.”

“Time frame for the sales?” Cooper wondered.

“I’d go back a year. The sales spiked after that documentary I did on A&E; a lot of people saw it, Googled me and bought the book.” Rhyme’s head was forward and he felt exhilarated. He was on the hunt and he knew his heart was pounding hard—felt the sensation in his neck and head, of course, not in his numb chest.

“Besides, I’d think emotionally you don’t buy a book to help you plan a killing and then wait two years. This perp’s moving fast.”

“You’re sounding quite psychological, Rhyme,” Sachs said, laughing. “That almost sounds like you’re profiling him.”

A pseudoscience, he felt. But he replied with a shrug, “Who said forensic scientists can’t be aware of human nature? That’s all. Let’s get to work. Who coughed up a hundred and twenty dollars for my words of wisdom, plus shipping and handling?”

In three hours they had a rough list from the publishers, online retailers and professional bookstores. Sixty-four people in the New York area had bought the textbook in the past year, paying full price.

“Ouch,” Cooper muttered. “Sixty-four? That’s a brick wall.”

“Not at all,” Rhyme whispered, looking over the list. “I’d say it’s merely a speed bump.”

# # #

Okay, he was a catch.

Vicki Sellick probably wouldn’t’ve thought of him that way by herself. But Joan and Alaki from work had met them for a drink earlier that night and both gave her subtle raised-eyebrows approval ratings. Joanie had whispered, “Go, girl! You hooked a good one.”

Oh, stop…

But, yeah, Vicki now thought, she had.

Her date was courteous, handsome, had a great job and on the two times that he’d stayed over their time together had been… well, fantastic. They made a solid couple, politically in tune (centrist Democrats), athletic, lovers of the out of doors. They’d both been through tough divorces. True, he worked long hours, but so did she, a Wall Street lawyer. And he was older—in his mid-fifties, but looked much younger. Besides, Vicki, thirty-seven, had stopped using age as a definitive criterion for potential partners some years ago, one of her better decisions in the crazy world of dating.

He now steered his Jaguar to the curb in front of her apartment and, without hesitation, took her in his arms, kissing her firmly.

She had wondered if tonight would be the third time he stayed and it probably would have been, except that he had a 6:00 a.m. flight tomorrow on business. His assistant was out of commission for some reason or another so he had to get ready for the meeting all by himself.