The Big Read: Waiting for terror - The plan for the next 7/7

She is trained to follow human scent, and there are people down in this cramped and dusty hole, though none are in a good way. A man lies supine among broken breeze blocks and sandbags with massive crush injuries to his chest.
The prone woman next to him is dead already, both her hands taken roughly off by the same explosion. Another benighted individual sits grubby and stained with an exposed compound fracture on his right arm, cradling a child. A further infant is close, in the throes of an acute asthma attack. All is dusty. All is dark. The dog trots out. Some time later the first voice comes. It is a strong voice.