It was only when the bones of the first devoured victims were discovered that the true nature and power of these swarming black creatures with their razor sharp teeth and the taste for human blood began to be realised by a panic-stricken city. For millions of years, man and rats had been natural enemies. But now, for the first time – suddenly, shockingly, horribly – the balance of power had shifted ... The terror begins. 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 ... the rats.