“I used to sneak into her bedroom. She would hang a violet scarf in the window if it was safe. It was a tiny pebble-dash terrace house with walls like paper. I could hear her father in the next room. It was—”

“Madness,” said Gabriel.

Keller said nothing.

“Did Graham know?”

“Of course.”

“You told him?”

“I didn’t have to. I was under constant MI5 and SAS surveillance.”

“I assume he told you to break it off.”

“In no uncertain terms.”

“What did you do?”

“I agreed,” replied Keller. “With one condition.”

“You wanted to see her one last time.”

Keller lapsed into silence. And when finally he spoke again, his voice had changed. It had taken on the elongated vowels and rough edges of working-class West Belfast. He was no longer Christopher Keller; he was Michael Connelly, the laundry deliveryman from the Falls Road who had fallen in love with the beautiful daughter of an IRA chieftain from Ballymurphy. On his last night in Ulster, he left his van on the Springfield Road and scaled the garden wall of the Conlin house. The violet scarf was hanging in its usual place, but Elizabeth’s room was darkened. Keller soundlessly raised the window, parted the gauzy curtains, and slipped inside. Instantly, he absorbed a blow to the side of his head, like the blow of an ax blade, and began to fade from consciousness. The last thing he remembered before blacking out was the face of Ronnie Conlin.

“He was speaking to me,” said Keller. “He was telling me that I was about to die.”

Keller was bound, gagged, hooded, and bundled into the boot of a car. It took him from the slums of West Belfast to a farmhouse in South Armagh. There he was taken to a barn and beaten severely. Then he was tied to a chair for interrogation and trial. Four men from the IRA’s notorious South Armagh Brigade would serve as the jury. Eamon Quinn would serve as the prosecutor, judge, and executioner. He planned to administer the sentence with a field knife he had taken from a dead British soldier. Quinn was the IRA’s best bomb maker, a master technician, but when it came to personal killing he preferred the knife.

“He told me that if I cooperated, my death would be reasonable. If I didn’t, he was going to cut me to pieces.”

“What happened?”

“I got lucky,” said Keller. “They did a lousy job with the bindings, and I cut them to pieces instead. I did it so quickly they never knew what hit them.”

“How many?”

“Two,” answered Keller. “Then I got my hands on one of their guns and shot two more.”

“What happened to Quinn?”

“Quinn wisely fled the field of battle. Quinn lived to fight another day.”