This united state - Colin Forbes

The island state - Britain - is in mortal danger. Paula Grey rescues a key American from death. Enemies flood into the country. The Prime Minister is assassinated. Is a giant power determined to absorb Britain into its own system?

On whose side is Sharon Mandeville, glamourous millionairess? Grim Ed Osborne arrives - with the villainous Jake Ronstadt and his army of henchmen. Newman sees an informant killed by a mysterious marksman, The Phantom. Denise Chatel, attractive assistant to Mandeville, appears vanishes. Havoc and terror grip London.

The Trail leads Tweed and his team to Basle, Switzerland - on into the sinister Black Forest. The murderous Umbrella Men, encountered in London, reappear. A battle takes place in the ice-bound forest. Tweed moves on to Strasbourg, then Paris, hunted by The Phantom, still unidentified. Sharon Mandeville is everywhere.

The spectacular, decisive climax erupts on Romney Marsh in Kent as a hostile naval task force reaches Britain.