“I doubt she would tell me, Agent. Perhaps it is best to let them lie in peace.”

Coop could only stare at her. “Tell me, Ms. Bolger, are you Kirsten’s mother?”

“I? No, my dear sister is indeed her mother. Ah, I see. You’re wondering why Kirsten and I were always so close.”

Delion sat forward in his chair.

“She was a disturbed child, and she needed me. I believed I knew her very well.”

Coop said, “How old was she when you gave her a ring to match Bundy’s?”

“Ah, so you know about that. Those matching rings—Kirsten told me it was the best present she’d ever get in her entire life, she knew it. She never took off either ring, so far as I know. I gave them both to her when I told her who her father was.

“Now, about the girls here in San Francisco. I never had a clue she’d killed girls and women before she left. But looking back on it now, knowing what I know now, it doesn’t surprise me. I knew soon enough she was the Black Beret, impossible not to. I did not, however, ever know where she was at any given time. Whenever she called, I counseled her to turn herself in.”

She paused for a moment, to see if they’d believed that whopper. Fat chance. After a moment, she continued, “I mourned when the FBI released the news that Bruce was dead. I knew she had to be devastated. Kirsten counted on him, you see, couldn’t really manage much in her life without him. They were like two halves of a puzzle that fit together, to produce—well, I suppose, you would have to say that together they produced monstrous evil. Do you think it odd she began killing before she even knew who her father was?”

Coop said, “You make it sound like an unusual quirk. She was only fifteen when she killed a classmate. We may never know if she killed when she was even younger. Ms. Bolger, it was your legal responsibility to inform us about Kirsten. Why didn’t you? Why did it take us finding Kirsten’s cell and coming to you?”

Sentra merely raised her hand and laid it lightly over Childs’s. He said promptly, “I have spoken with our attorneys.” He walked around the sofa to stand in front of her. “He tells me you can’t do anything to Sentra. As she said, she did not know where Kirsten was at any point in time; that is all.”

“Her cell phone—”

“You will find nothing incriminating in Sentra’s telephone records.”

Sentra said from behind Childs, “Is there anything else you would like to know, Agents?” She looked down at the beautiful thin watch on her wrist. “The symphony does such a nice job with Mendelssohn. We really must be leaving.”

“You could go see Kirsten, Ms. Bolger,” Lucy said, “You could encourage her to speak again.”

Slowly, Sentra Bolger rose. Clifford Childs clasped her hand in his. Over thirty years, Coop thought, these two were the age of his parents, but somehow so different—why hadn’t they ever married? He turned to see that Clifford Childs’s sons and their wives had filed quietly into the immense living room, as if summoned by their queen for departure. Did they all want to protect this woman? It was as George Lansford had told them: the Childs family seemed to adore Sentra Bolger. Coop imagined Childs himself would gladly kill for her as well, if it came down to it.

They rose.

“I am fine,” Sentra said toward the group, then said to Coop and Lucy, “Kirsten doesn’t need me. I know her. By next week, she will be speaking again, and she will be enraged. She will be judged sane, and she will go to trial and she will be given the death penalty, like her father, despite all the self-promoting lawyers who will demand to represent her. Her appeals will stretch on for years and years, probably for long after I’m dead and forgotten.”

“You will never be forgotten!” One of the young men hurried to her side, a lovely cashmere shawl in his hands. She smiled up at him as he placed it over her shoulders. He looked the picture of his father. “That is very kind of you, Basil.” She smiled at the knot of people around her. “Now, Inspector, Agents, I wish you a pleasant evening. Do you know, after this tragedy, I look around and realize how very lucky I am. I have the most wonderful family in the world.” Her slightly mad smile took in all the people standing protectively around her in the vast living room.

CHAPTER 81

North Beach, San Francisco

Sacred Mount Cemetery

Thursday morning

More than a hundred people stood graveside at the burial of Arnette Carpenter, many of them members of the media. Her body had been found three days before, the autopsy showing that she’d been bludgeoned to death. They found her skeleton exactly where Kirsten had told Coop she’d buried her.