O Império do Tempo por Crawford Kilian , parte de Kilian's Séries Guerra do Cronoplano .
O nome do protagonista era Jerry Pierce:
The intertemporal shuttle between Earth/2015 and Beulah/1804 was an old subway train. [. . .] Jerry Pierce was one of the few passengers coming uptime on the shuttle, but over a hundred people were waiting on the shuttle platform for the trip back.
Pierce "congela":
Pierce was frightened, but observed the phenomenon with an Agent's Trained dispassion. Here was a "freeze"—an occupational hazard of Trainable Agents after years of psychoconditioning. Its onset meant the Trainable's usefulness was nearing its end.
Almost twenty years, he thought. I must be due for it. But this is just the first freeze; I could go for years without experiencing another one. I'm thirty-five; another two or three years left, anyway.
Outro "Treinável" recrutado do passado:
Pierce recognized him at once, though they had never met. The young man was a tall, heavyset, shaggy blond and tailored denims and a white silk shirt; an agate bolo tie glinted under his short beard. He was Philon Richardson, a Trainable Climber from Los, born 985 BC in Thrace, of Dorian stock. Tested four years ago at age sixteen, and brought uptime with his equally Trainable sister for his education. Took his Trainer's family name, as did most Climbers. Under Philon's foppish appearance was still a hint of the arrogant warrior-king he would have become if the Agency had not tapped him: a barbarian princeling, carousing in the ruins of Nestor's palace. Instead, he had become a twenty-first-century organization man—an errand boy now—but he was destined to wield more power with his fichewriter than his father ever dreamed of wielding with a sword. Still, it was interesting that anything at all was left of Philon's background. The psychoconditioners knew their job.