The chamber was huge. Great arches and porticoes extended it beyond Sam’s line of sight. The floor on the east side dropped away abruptly in an embankment. An arm of the Thames had been diverted into this area. Sam noted distortion on the water surface and searched the shadows until he found Willie’s spy drone, hovering near the vaulted ceiling. From the scattered piles of moldering crates, this place had once been a loading dock. In olden times it had held the hustle of honest workmen, or perhaps dishonest ones. Now it hosted workmen of an evil bent. Its stone walls range with the screams of their tortured victims, scattering the echoes into an infinity of agony.