The building had an old front that faced toward the building that had just blown up, and, on the opposite side, a new front, still under construction, facing toward a commercial district in the making. Access to the latter was complicated by its being an active construction zone, but she knew how to get there, because the people who had trained her in London had drilled it into her that she must always know every possible way of getting out of a building. So instead of taking the obvious exit through the front, which she envisioned as an ankle-deep surf zone of broken glass, she doubled back and followed the escape route she had already scouted through the construction zone. This changed from day to day as temporary barriers were erected and removed between the various shops and offices that the workers were creating. Today, though, they had left all the doors open as they had fled the building, so all that Olivia really needed to do was pursue daylight while scanning the floor ahead of her for dropped nails.