Loyce gazed up, rigid with horror. The splotch of darkness, hanging over the City Hall. Darkness so thick it seemed almost solid. In the vortex something moved. Flickering shapes. Things, descending from the sky, pausing momentarily above the City Hall, fluttering over it in a dense swarm and then dropping silently onto the roof. Shapes. Fluttering shapes from the sky. From the crack of darkness that hung above him. He was seeing--them.