Laurence and Serafina were supposed to spend the night together, but Laurence ended up going back to work to pull another all-nighter instead. “Maybe if I go without sleeping another few days,” he told Serafina, “I’ll be able to report some progress, instead of that failure.”

“Or maybe you’ll just get sleep deprived, and make even bigger mistakes,” Serafina said, smiling because she’d been there herself. “Good luck. Love you.” She walked back up toward Market where the BART was having irregular service, and Laurence watched her the whole way back up the block, wondering if she would look back at him over her shoulder, or turn to wave one last time. She didn’t. His heart skidded like a dirt bike on black ice as he watched her disappear.

*   *   *

LAURENCE WANTED TO wait until Isobel was in a good mood to tell her about Priya’s accident. But after several days, Laurence realized Isobel was never in a good mood lately. Almost the first thing she’d ever said to Laurence was that she hated to be an authority figure, and now she was Milton’s second-in-command in this huge venture, laying down the law for a small army of geeks. Whenever Isobel saw herself in the mirror, wearing a plum-colored business suit with her hair in a gray bob, she did a double take.

At last, after Laurence had pulled two all-nighters in a row at the lab, he decided to bite the bullet. When he crawled home, Isobel was staring at satellite images of the Atlantic Ocean, at the small kitchen table, and she pointed at an ugly smudge in the Gulf Stream. “Superstorm Camilla.”

“Oh yeah.” Laurence peered over her shoulder. “I heard about that. A near miss, on the East Coast. Everybody said it could have been way worse than Sandy or Becky.”

“Third near miss in the past couple years,” Isobel said. “And hurricane season isn’t over yet. Milton is wigging out.”

Laurence pulled up a chair. “Listen, I don’t want you to tell Milton. But we had a … a setback at work.”

“What kind of setback?” Isobel pushed her laptop shut with a click.

“We had an accident. At the lab.” Laurence tried to explain the whole story without mentioning Patricia at all. “We’re all pretty unsure how to move forward.”

“Well.” Isobel pushed her chair back and went to get a bottle of grappa from the cabinet, pouring some for Laurence and some for herself. She sat back down with her elbows on the table. “Sounds like you need more safety protocols, and maybe don’t randomly test your equipment on human subjects, without talking to Milton or myself first.”