They continued their visitors’ tour through the British capital a while longer, while the city slowly began to awaken. They were almost out of gas. Rafael asked Sarah to turn left at the intersection with King’s Cross Station and to slow down. Then the double agent moved to the backseat, under Sarah’s close scrutiny.

Jack folded down the backseat to gain access to the trunk, from which he took out a green wooden box. He returned the seat to its normal position, sat up, and rolled down all the windows. Following this, he opened the wooden box, took out the small balls it contained, and began throwing them one by one to one side of the street, and then the other, almost rhythmically. The balls rolled under the automobiles parked at the curb.

“No matter what happens, don’t stop until I tell you.”

The car was already about a hundred yards from Euston Station.

“Now speed up and then stop in front of the station,” Rafael ordered, throwing the last ball.

“What are you doing?” Sarah asked.

“We’re almost there,” he said.

Then, when the car was just outside Euston Station, the unexpected happened.

“Okay, shut off the engine.”

Sarah obeyed, and right away all hell broke loose. A succession of small explosions moved toward them from the King’s Cross intersection, approaching from both sides of Euston Road. A thick cloud of tear gas invaded the street. Shouts could be heard. People who lived in the neighborhood woke up terrified.

Shielded by the gas barrier behind them, Rafael and Sarah ran toward Euston Station.

Without exchanging a word, they ran to the taxi stop on the lower level. From there, everything became much simpler. They asked the taxi driver to take them to the Waterloo Station, where they arrived in time to catch the Eurostar headed for Paris.

They took advantage of the comfortable trip to rest a bit. Sarah slept almost the entire way, and Rafael leaned back in his seat, although only after making two inspections of the whole train. No one was following them.

Two hours and thirty-seven minutes later they arrived at the famous Gare du Nord in the center of Paris. From there they moved on to Orly. They had managed to disappear.