This is the third book in Herberts Rats trilogy (The Rats being first and Lair second) and this time a new twist is added to the story: a nuclear holocaust.
The first few chapters are very gripping and brilliant as the book starts out with London being hit and destroyed by 5 nuclear bombs. Few lucky survivors manage to stay alive by getting to the shelter of the London Underground before they are destroyed the the bombs and their devestating aftermath.
Once the bombs are over and all has settled, some people return to the streets or come out of hiding, only to succumb to the horrific effects of radiation poisoning as after the bombs highly radioactive nuclear ashes fall and the streets wont be safe for at least four weeks.
Culver is protected by a pratically falling building from the damage by the bombs and manages to get into a governemnt shelter - along with a blind government agent who he happened to be with at the time - in the little time they have before they radioactive ashes fall to earth.
However, our survivours are not as lucky as they think as they find themselves being brutally attacked and killed by killer black rats, who have lived underground since the events of Lair, but now that their home has bee invaded they are back with a vengeance. Now nowhere is safe Culver and the other survivours as they cannot go above ground for the radiation and are trapped with the Rats underground.
I really loved this book and didnt want it to end. Even though it's almost 500 pages it is a quick read as it's so addictive you find it very difficult to put down.
Reccomended to fans of the rats books, James Herbert, or horror in general.