The enemy 1st Hyperion pbk. ed., 2011.

They'll chase you.They'll rip you open.They'll feed on you . . .When the sickness came, every parent, policeman, 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?