London, at an hour that made Rosalind glad she'd nicked her brother's black cloak instead of wearing her scarlet one. The factory alongside her had quit belching smoke for the night, but it would start again soon. A noise caused her to draw back against the brick wall. Glancing up, she gasped. An oblong hulk was drifting across the sky. The darkness obscured the details, but she didn't need to see; a brass-colored lock would be painted across the side. Mellator had launched his dirigible.