Spring, 1919. James 'Max' Maxted, former Great War flying ace, returns to the trail of murder and treachery he set out on in The Ways of the World. He left Paris after avenging the murder of his father, Sir Henry Maxted, convinced the only man who knows about the mysterious events leading up to Sir Henry's death is elusive German spymaster, Fritz Lemmer.

To find out more, he enlists in Lemmer's network under false colours and is despatched to the Orkney Isles, where the German High Seas Fleet has been interned in Scapa Flow. His mission: to recover a document secreted aboard one of the German battleships. But the information it contains is so explosive Max is forced to break cover and embark on a desperate and dangerous race south, pursued by men happy to kill him to recover the document.

The breathless chase will take Max from the far north of Scotland to London and on to Paris, where the world's governments are still bartering over the spoils in the aftermath of the Great War. The stakes could not be higher. It is life and death for all concerned.