London is struck by an invasion. Women, children, old and young, none are safe from the deadly menace. The attacks are swift and sure, escape is impossible.
A state of emergency is declared.
Evacuation seems the only solution in the face of a growing panic and mounting death toll. War is declared on the public enemy number one.
"Cecil B. de Mille once said that a good film would be to start off with an earthquake and build up to a climax - James Herbert is the literary equivalent of that."
- Greater London and Essex Newspapers, May 9, 1980