"Where are you?" Kincaid said sharply in Gemma's ear. "You've been ages-"

"I'm still at Erika's. I'm sorry, my signal's iffy-"

"We found the Land Rover, still registered to Joss Miller. And a lockup garage in Chelsea Square, about a seven-minute walk from the house. But I don't think Dom-"

"I know." Gemma stepped out into the garden, where her mobile reception was better. "It was Ellen."

She told him all she'd learned from Erika, then added, "What if Dom came across the brooch and chanced selling it, because he was desperate and had nowhere else to turn? He probably had no idea of its history or of its true value until he showed it to Kristin."

"But Ellen would have known," Kincaid continued. "Either because she'd seen David Rosenthal's manuscript or-"

"Or because her father told her." Gemma's voice was flat with disgust. Could Joss Miller possibly have bragged to his daughter about rape and murder?

"Deathbed confession, maybe," Kincaid said more charitably, but then he hadn't heard Erika describe what Joss Miller had done. "But if Ellen learned the history of the brooch, no matter how or when she came by the knowledge, she would have known that if the piece were publicly connected with her family, it could prove disastrous.

"She would have been livid when she found it missing." Gemma imagined Ellen going to her father's desk or safe-surely the Millers had a safe-perhaps to get a piece of her own to wear, and realizing the brooch was missing. "Oh, God, she'd have ripped poor Dom to shreds. And she would have told him he had to get it back, at all costs."

"So then Dom sent Kristin flowers," Kincaid continued, "and got her to agree to meet him that night at the Gate. But Kristin told him she couldn't take the brooch out of the sale-"

Gemma thought of the girl she had met. "My guess is that she was fed up with him. And she wanted the money from the commission. That four percent of the sale price would have meant something to her, if not to Dom. And she would have told him that we'd been there, saying someone had claimed the brooch, that it had been stolen during the war. That would've put the wind up Dom completely. But then…how did Ellen-" Gemma hesitated, still not quite sure she could put it together.

"I think," said Kincaid, "I think that Dom rang his mother, after Kristin left him at the Gate that night. We'll have to ask Eva, the barmaid, if she remembers him using his mobile. And Ellen…" Kincaid paused, and Gemma knew he was running his free hand through his hair until it stood on end, the way he did when he was working something out.

"Maybe at first she just meant to talk some sense into Kristin," she said. "Ellen's Mercedes was in for repairs, so she might have had the Land Rover out for a small errand, then parked near the house rather than in the lockup-"

Kincaid picked it up. "But the car had no plates-from the records I'd guess it's an old mud car from their country place-and that might have occurred to her while she was sitting in front of Kristin's building, waiting for Kristin to come home. And Dom's news about Erika coming forward would have raised the stakes enormously. It meant not possible ruin, but certain ruin. She must have realized that if Erika came forward, it wasn't just reputation, but the possibility that the Millers and their business assets could have faced a lawsuit. There are enough precedents. There have been both individuals and corporations sued for profiting from atrocities committed against Jews during the war."

"And then she saw Kristin walking down from the bus stop, alone." Gemma watched the leaves of Erika's fig tree move in the breeze. "And she knew Kristin would have to cross the road-"

"And Ellen would have guessed that she could risk the CCTV, because the car had no plates, and the camera would never get a clear view of the driver's face." Kincaid paused, and when he went on, his voice held a hint of awe. "What a risk she took. But she couldn't stop there. She still had to try to get the brooch removed from the sale. So the next morning, she sent Dom to see Harry Pevensey. That was the row Harry's neighbor heard. But Harry refused as well-even a percentage of the reserve on the brooch would have been a godsend to him-"

"And Dom had no proof of ownership, not without doing the very thing he was trying to avoid." Gemma couldn't help but feel pity for Dominic Scott. "And then when he went home to tell his mum Harry wouldn't cooperate, we were there to tell him Kristin was dead, murdered. No wonder he fainted on us. He must have realized his mother had killed her."

Kincaid finished the thought for her. "And then, because Dom had failed in his mission, that night Ellen killed Harry, too."

Gemma felt ill, not only for the vicious deaths of Kristin Cahill and Harry Pevensey, but for the brutal choice Ellen Miller had forced on her son. "And Dom-Dom had to decide whether to inform on the mother who had bullied him his entire life, in the process ruining his family's-and more important, his grandfather's-name-"

"Or let his mother get away with murdering two innocent people. No wonder the sad bugger decided it was easier to top himself."

"Or three people," said Gemma. She looked through the conservatory window at Erika, still sitting in the kitchen, and told him that Erika had seen a car waiting in her street last night, its lights dark, and that she had described it as looking like a Land Rover. "If her cabdriver hadn't waited until she got in her door-" Only then did the enormity of what might have happened really hit her.

"Bloody hell!" Kincaid swore so viciously that Gemma jumped. "Of course. Erika. Erika is the last, and the most vital, link. You were right to have been worried about her. Listen-" He stopped and Gemma heard Cullen's voice in the background, and Kincaid responding with "No, hang on to the warrant. We're not going to search the garage yet. We don't want to tip Ellen Miller-Scott off. I have a much better idea."

"I will not let you put another young woman's life in jeopardy." Erika crossed her arms, looking as stubborn as Gemma had ever seen her.

Gemma sat once more in the chair opposite and studied her friend across the small kitchen table. Although when Kincaid had explained to her what he meant to do, she'd agreed reluctantly, she knew that he was right. Now she just had to convince Erika.

"I know you don't want to do that," she said earnestly, meeting Erika's gaze. "But you don't want to see Ellen Miller-Scott get away with two murders, not to mention what she did to her son. And we can't place her at the wheel of that car at the time of the collisions, any more than we could have placed Dominic."

"But if you find evidence on the car-"

"It doesn't matter. Any good lawyer would make mincemeat of it, and Ellen will have the best. All she has to do is say her son was driving, and that he took his own life because he felt guilty over what he'd done. She could even say Dom was drink-driving and both deaths were tragic accidents, and we couldn't prove otherwise. But"-she leaned forward, pushing her empty teacup and plate aside-"we believe she's going to give us the perfect opportunity to prove intent to commit murder.

"I think she waited for you to come home last night. I suspect she rang first to see if you were in-we'll check your caller ID-and when you didn't answer, she took her opportunity, and if not for your cabbie, she might have succeeded. We'll need to be prepared for her to ring you again," Gemma added, "because if you are at home, she'll need some ruse to get you out of the house."

"But her son is dead! How could this woman go on with-"