When he needed help, he’d gone looking for the smartest, most ethically flexible genetic engineer he knew: Dr. Surrey Blackburn-Kim, Nathan’s mother. Dr. Kim had known that this path would lead them through the broken doors at last, and she’d tried to refuse—not too hard, I was sure; she’d been the same person then, even if she’d gone by a different name—and when Dr. Banks had produced information that he could use to force her to work on his project, she’d agreed, on one condition. Dr. Kim had to die.

