The Government Communications Headquarters, or GCHQ, was Britain’s version of the NSA. At 2:20 p.m. it intercepted a call from a man who sounded like Eamon Quinn. He spoke six words: “The bricks are in the wall.” MI5 knew from past experience that the phrase meant the bomb was in place. Twelve minutes later Ulster Television received an anonymous telephone warning: “There’s a bomb, courthouse, Omagh, main street, five hundred pounds, explosion in thirty minutes.” The Royal Ulster Constabulary began evacuating the streets around Omagh’s courthouse and frantically looking for the bomb. What they didn’t realize was that they were looking in the wrong place.

“The telephone warning was incorrect,” said Gabriel.

Seymour nodded slowly. “The Vauxhall wasn’t anywhere near the courthouse. It was several hundred yards farther down Lower Market Street. When the RUC began the evacuation, they unwittingly drove people toward the bomb rather than away from it.” Seymour paused, then added, “But that’s exactly what Quinn wanted. He wanted people to die, so he deliberately parked the car in the wrong place. He double-crossed his own organization.”

At ten minutes past three the bomb detonated. Twenty-nine people were killed, another two hundred were wounded. It was the deadliest act of terrorism in the history of the conflict. So powerful was the revulsion that the Real IRA felt compelled to issue an apology. Somehow, the peace process held. After thirty years of blood and bombs, the people of Northern Ireland had finally had enough.

“And then the press and the families of the victims started to ask uncomfortable questions,” said Seymour. “How did the Real IRA manage to plant a bomb in the middle of Omagh without the knowledge of the police and the security services? And why were there no arrests?”

“What did you do?”

“We did what we always do. We closed ranks, burned our files, and waited for the storm to pass.”

Seymour rose, carried his glass into the kitchen, and removed the bottle of Gavi from the refrigerator. “Do you have anything stronger than this?”

“Like what?”

“Something distilled.”

“I’d rather drink acetone than distilled spirits.”

“Acetone with a twist might do the trick about now.” Seymour dumped an inch of wine into his glass and placed the bottle on the counter.

“What happened to Quinn after Omagh?”

“Quinn went into private practice. Quinn went international.”

“What kind of work did he do?”

“The usual,” replied Seymour. “Security work for the thugs and potentates, bomb-making clinics for the revolutionaries and the religiously deranged. We caught a glimpse of him every now and again, but for the most part he flew beneath our radar. Then the chief of Iranian intelligence invited him to Tehran, at which point King Saul Boulevard entered the picture.”

Seymour popped the latches on his briefcase, removed a single sheet of paper, and placed it on the coffee table. Gabriel looked at the document and frowned.

“Another violation of Office protocol.”

“What’s that?”