Dr. Sebastian Briggs turned away from the monitor, content that David Underwood was sufficiently broken for the moment. The subject would be ready for his next dose of Halcyon shortly.

David let out a tired wail from behind the metal door in the back of the factory.

“Home on the range,” Briggs whispered.

David was the good soldier, the one who had offered himself for the chronic, ongoing experiment, whether he knew it or not. The other subjects had finished-or at least survived-the clinical trials, unaware of their contribution to science, their crime forgotten.

But Briggs hadn’t forgotten. Roland Doyle, Anita Molkesky, Wendy Leng, and Alexis Morgan had gone on to lead regular lives. Briggs hadn’t let them escape completely, though, because the world was merely a larger Monkey House, and the experiment had never ended, because they carried it inside them.

He’d watched them and tracked them. Wendy, especially.

The girl, Susan, hadn’t been his fault, although he’d been stuck with the blame. It had taken a decade for him to restore his reputation, but luckily his backers were less interested in publishing in peer journals and more interested in tangible results.

Soon, though, his colleagues would understand who among them had achieved an evolutionary leap in emotional engineering.

He meandered through the maze of cells until he reached the main section of the Monkey House. It had changed little since the original trials, and the rows of conveyor belts, metal storage canisters, steel tables, drill presses, rusty farming implements, and thermoforming machinery added to that sense of a frenzied inner city. Alleys and crevices broke off from the main boulevards, where the scarred vinyl flooring marked years of industrial traffic. Here and there, broken sorting machines and hydraulic arms were stacked in schizophrenic sculptures, hoses and wires dangling.