The Enemy by Charlie Higson
The Enemy #1
Good condition - slight bending on the back cover
 
When the sickness came, every parent, police officer, politician - every adult fell ill. The lucky ones died. The others are crazed, confused and hungry.

Only children under fourteen remain, and they're fighting to survive.

Now there are rumours of a safe place to hide. And so a gang of children begin their quest across London, where all through the city - down alleyways, in deserted houses, underground - the grown-ups lie in wait.

But can they make it there - alive?