"Langdon's moving faster!" Collet was still yelling on the radio. "He's running down Carrousel."

Fache kept running, cursing the length of the hallway with every step.

"Wait!" Collet's voice blared again over the radio. "He's moving! My God, he's alive. Langdon's moving!"

Arriving at the partitions, Fache snaked his way through them, saw the rest room door, and ran for it.

Fache sprinted down the Grand Gallery as Collet's radio blared over the distant sound of the alarm.

"Wait…"

"He jumped!" Collet was yelling. "I'm showing the signal out on Place du Carrousel! Outside the bathroom window! And it's not moving at all! Jesus, I think Langdon has just committed suicide!" Fache heard the words, but they made no sense. He kept running. The hallway seemed never-ending. As he sprinted past Sauniere's body, he set his sights on the partitions at the far end of the Denon Wing. The alarm was getting louder now.

"he's picking up speed. He's moving too fast!"

The walkie-talkie was barely audible now over the alarm. "He must be in a car! I think he's in a car! I can't --" Collet's words were swallowed by the alarm as Fache finally burst into the men's room with his gun drawn. Wincing against the piercing shrill, he scanned the area.

"…moving south… faster… crossing the Seine on Pont du Carrousel!"

The alarm cut off finally, and Collet's voice became audible again over the walkie-talkie.

The stalls were empty. The bathroom deserted. Fache's eyes moved immediately to the shattered window at the far end of the room. He ran to the opening and looked over the edge. Langdon was nowhere to be seen. Fache could not imagine anyone risking a stunt like this. Certainly if he had dropped that far, he would be badly injured.

Fache turned to his left. The only vehicle on Pont du Carrousel was an enormous twin-bed Trailor delivery truck moving southward away from the Louvre. The truck's open-air bed was covered with a vinyl tarp, roughly resembling a giant hammock. Fache felt a shiver of apprehension. That truck, only moments ago, had probably been stopped at a red light directly beneath the rest room window.

An insane risk, Fache told himself. Langdon had no way of knowing what the truck was carrying beneath that tarp. What if the truck were carrying steel? Or cement? Or even garbage? A forty-foot leap? It was madness.

Collet was already radioing the agents outside, pulling them off the Louvreperimeter and sending them to their patrol cars in pursuit, all the while broadcasting the truck's changing location like some kind of bizarre play-by-play.

Sure enough, the Trailor truck that had crossed the bridge was slowing down and making a right turn onto Pont des Saints-Peres. So be it, Fache thought. Amazed, he watched the truck disappear around the corner.

It's over, Fache knew. His men would have the truck surrounded within minutes. Langdon was not going anywhere.

Stowing his weapon, Fache exited the rest room and radioed Collet. "Bring my car around. I want to be there when we make the arrest." As Fache jogged back down the length of the Grand Gallery, he wondered if Langdon had even survived the fall.

"The dot is turning!" Collet called. "He's turning right on Pont des Saints-Peres!"

Langdon ran. Guilty as charged.

Not that it mattered.

Only fifteen yards from the rest room, Langdon and Sophie stood in the darkness of the Grand Gallery, their backs pressed to one of the large partitions that hid the bathrooms from the gallery.

The last sixty seconds had been a blur. Langdon had been standing inside the men's room refusing to run from a crime he didn't commit, when Sophie began eyeing the plate-glass window and examining the alarm mesh running through it. Then she peered downward into the street, as if measuring the drop.

"With a little aim, you can get out of here," she said.

They had barely managed to hide themselves before Fache had darted past them, gun drawn, and disappeared into the bathroom.

"Sophie, there's no way I'm jump --"

Up the street, an enormous twin-bed eighteen-wheeler was headed for the stoplight beneath the window. Stretched across the truck's massive cargo bay was a blue vinyl tarp, loosely covering the truck's load. Langdon hoped Sophie was not thinking what she seemed to be thinking.

Aim? Uneasy, he peered out the rest room window.

"Take out the tracking dot."

Bewildered, Langdon fumbled in his pocket until he found the tiny metallic disk. Sophie took it from him and strode immediately to the sink. She grabbed a thick bar of soap, placed the tracking dot on top of it, and used her thumb to push the disk down hard into the bar. As the disk sank into the soft surface, she pinched the hole closed, firmly embedding the device in the bar.

Before Langdon could protest, Sophie ran at the window, holding the can before her like a battering ram. Driving the bottom of the trash can into the center of the window, she shattered the glass.

"Give me the soap!" Sophie yelled, barely audible over the alarm.

Alarms erupted overhead at earsplitting decibel levels.

Langdon thrust the bar into her hand.

Handing the bar to Langdon, Sophie retrieved a heavy, cylindrical trash can from under the sinks.

The soap plummeted downward toward the truck, landing on the edge of the tarp, and sliding downward into the cargo bay just as the traffic light turned green.

"Congratulations," Sophie said, dragging him toward the door. "You just escaped from the Louvre."

Palming the soap, she peered out the shattered window at the eighteen-wheeler idling below. The target was plenty big -- an expansive, stationary tarp -- and it was less than ten feet from the side of the building. As the traffic lights prepared to change, Sophie took a deep breath and lobbed the bar of soap out into the night.

Fleeing the men's room, they moved into the shadows just as Fache rushed past.

"There's an emergency stairwell about fifty meters back into the Grand Gallery," Sophie said. "Now that the guards are leaving the perimeter, we can get out of here."

Langdon decided not to say another word all evening. Sophie Neveu was clearly a hell of a lot smarter than he was.

Now, with the fire alarm silenced, Langdon could hear the sounds of DCPJ sirens tearing away from the Louvre. A police exodus. Fache had hurried off as well, leaving the Grand Gallery deserted.