Six Traffic Squad touring cars and a motorcycle that the department was testing with a view to forming a motorcycle squad were racing their engines outside Grand Central Terminal, prepared to escort Hennessy’s limousine at the highest possible speed over the Manhattan Bridge, across Brooklyn, and into Nassau County. The streets were dark, dawn a faint hint of pink in the eastern sky.

“Here they are!” cried Lillian.

Isaac Bell exploded from the railroad terminal, running hard, with his hand locked on the arm of a youthful, fit-looking Nuland-Novicki, who was scampering alongside like an eager schnauzer.

Engines roared, sirens howled, and in seconds the limousine was tearing down Park Avenue. Lillian handed Nuland-Novicki the latest wire from the hospital. He read it, nodding his head. “The patient is a strong man,” he said reassuringly. “That always helps.”

AT BELMONT PARK that same pink hint of dawn reflected on the shiny steel rail down which Dmitri Platov’s revolutionary thermo engine was scheduled to speed on its final test run. The freshening sky gave urgency to the task of a man crouched under it. If he stayed much longer, early risers would see him loosening bolts with a monkey wrench. Already, he smelled breakfast. The breeze traveling across the infield carried whiffs of bacon frying on the support trains in the yards on the other side of the grandstand.

Mechanicians would appear any minute. But sabotage was slow work. He had to wait before he turned each nut to sluice the threads with penetrating oil to prevent the loud screech of rusty metal. Then he had to mop the drips that would be noticed by sharp eyes performing the last earthbound tests before experimenting on Steve Stevens’s biplane, which was waiting near the rail under canvas.

He would have finished by now, except that the detectives guarding Josephine Josephs’s flying machine made a habit of sweeping the infield. Silent, unpredictable, they would appear out of nowhere shining flashlights, then vanish just as suddenly, leaving him to wonder when they were coming next and from which direction. Twice he had crouched, nervously rubbing his arm, while he waited for them to move on.

His final step, when he had loosened the fishtail that held two abutting ends of rail, was to work matchsticks into the space he had opened. If anyone tested the joint, it would not feel loose. But when assaulted by the enormous forces unleashed by the thermo engine, the rails would part and the joint burst open. Its effect would be like a railroad switch opened to shunt a train from one track to another. The difference was, this was a single rail, and the “train,” Platov’s miracle engine, would have no track to shunt onto but would fly through the air like a self-propelled cannonball. And God help anyone who got in its way.

Chapter 12

12

“HARRY FROST IS NOT DEAD,” said Isaac Bell.