“Huge amount of money. They needed a clock for their ships because every year thousands of sailors died from navigational errors. See, to plot a course you need both longitude and latitude. You can determine latitude astronomically. But longitude needs accurate time. A British clockmaker named John Harrison decided to go for the prize. He started working on the project in seventeen thirty-five and finally created a small clock that you could use on a ship and that lost only a few seconds over the course of an entire transatlantic voyage. When did he finish? In seventeen sixty-one.”

“Took him that long?”

“He had to cope with politics, competition, conniving businessmen and members of Parliament and, of course, the mechanical difficulties—almost impossibilities—of creating the clock. But he never stopped. Twenty-six years.”

The light changed to green and Duncan accelerated slowly. “In answer to your question, we’re going to see about the next girl on our list. We had a setback. But nothing’s going to stop us. It’s not a big deal—”

“In the great scheme of things.”

A brief smile crossed the killer’s face.

“First of all, they have security cameras in the garage?” Rhyme asked.

Sellitto’s laugh meant “in your dreams.”

He, Pulaski and Baker were back in Rhyme’s town house, going over what the rookie had collected in the garage. The homeless man who’d attacked Pulaski was in Bellevue. He had no connection to the case and was diagnosed as a paranoid schizophrenic off his meds.

“Wrong time, wrong place,” Pulaski had muttered.

“You or him?” Rhyme’d responded. He now asked, “Security cameras at the impound where he boosted the SUV?”

Another laugh.

A sigh. “Let’s see what Ron found. First, the bullets?”

Cooper brought the box to Rhyme and opened it for him.

A .32-caliber ACP bullet is an uncommon round. The semiautomatic pistol bullet has more range than the smaller .22 but not much stopping power, like the more powerful .38 or 9-millimeter. Thirty-twos have traditionally been called ladies’ guns. The market is somewhat limited but is still quite large. Finding a compatible .32 in the possession of a suspect could be circumstantial evidence that he was the Watchmaker but Cooper couldn’t just ring up local gun stores and get a short list of who’d been buying these rounds lately.

Since seven were missing from the box, and the Autauga MkII pistol holds seven in a full clip, that was Rhyme’s best guess for the weapon, but the Beretta Tomcat, the North American Guardian and the LWS-32 were also chambered for those slugs. The killer could be carrying any of them. (If he was armed at all. Bullets, Rhyme pointed out, suggest but don’t guarantee that the suspect carried or owned a gun.)

Rhyme noted that the slug was a 71-grain, big enough to do very serious damage if it was fired at close range.

“On the board, rookie,” Rhyme commanded. Pulaski wrote as dictated.

The book he’d found in the Explorer was entitled Extreme Interrogation Techniques and had been published by a small company in Utah. The paper, printing job and typography—not to mention the style of writing—were third-rate.