Near a pool where the reflection wore the face of someone else, they found the footprints converging like tributaries into a central well. Not water but a black glass had taken the place of depth. The black reflected a sky stitched with cold constellations, and in it the three could see not themselves but silhouettes that moved with a slow, resentful grace. They felt the glass like the inside of a fist: smooth, unyielding.