34 Underground Near Foothills, 24 December 1871 At eleven o’clock on Christmas Eve, Henry and Vinni stood on the overlook, this time with contraptions on their backs that looked like the wings of bizarre Christmas angels. Golden halos around their foreheads held optic devices. Henry wished he could check and re-check that everyone was in position. Vinni bounced on her toes, barely containing her excitement. “Don’t you love this?” she whispered, gesturing to the panorama below. The mice seemed to be moving more, which would make sense since, as rodents, they’d be more active at night. “Love what?” “The chase.” She struck a dueling pose. “The battle. The knowing that you’re doing something to set the world right.” He started to say no, but he didn’t want to crush her spirits. And he re

