AMSTERDAM AIRPORT HAS DISAPPEARED.

BLACKMAIL

   The mass of water in its place is the work of the FFF - an Irish terrorist group who want to force Britain's hand.

SUPTERFUGE

   The Dutch call in Detective Lieutenant van Effen - feared interrogator and undercover intimate of the criminal Krakers gang - to sabotage the FFF's plan.

DIASASTER

   If van Effen fails and the FFF get control of the vital dyke, either Holland will sink beneath the sea or Britain will be awash with blood.