When she’d told Sammy she wanted to mess, wanted her own bike, he’d gotten her this little Mexican headset taught you every street in San Francisco. Three days and she had it down, pretty much, even though he said that wasn’t like the map in a messenger’s head. You needed to know buildings, how to get into them, how to act, how to keep your wheels from getting stolen. But when he’d taken her in to meet Bunny, that was magic.