In a dark old factory in a sinister old town, a young boy is working to feed his family. Felix is training as a printer - until: disaster! He drops a letter down the drain, and before he knows what is happening he is dragged underground also, down to a world of boiling mud and beetles where child prisoners mine for gold, guarded by talking green gas and menaced by white alligators which are after the gold.

But Felix is not a boy to be a prisoner for long...

A masterly and creepy story for readers who can cope with tunnels and alligators...