Enclosure - Part II: Submersion Trilogy - Book 2, Part 2

A secret, underground railway.
A city, hidden behind a wall.
And a creature who walks out of the water...
But that's not all.
A pack of killer dogs, on the loose in a drowned city.
A girl of indeterminate age, reading minds and dreaming the future.
And boy on a quest who makes the most unlikely of bonds...
In the third part of Guy A Johnson's dark, dystopian thriller, connections are made and secrets revealed that were better left undisclosed.
And as the truth about the authorities is final...