When the sickness came, those under 14 were unaffected. The adults all became ill. The lucky ones died but many mutated into brainless, deformed monsters, oozing pus and blood and with a seemingly insatiable appetite - for children.
Gangs of youngsters are holed up all over London, barely surviving and being picked off, one by one, by hungry, marauding grown-ups. Rumours of a safe place to hide initiate a dangerous trek across the city, past alleyways, deserted buildings and underground stations where the grown-ups lie in wait.
With a smattering of bad language and a generous helping of gory violence, this is not a book for the faint-hearted youngster but may be just what 11- to 13-year-old zombie fans have been waiting for.