John Law is Anna's latest client, and her most formidable challenge. The 'Cryptographer', people call him. He is mysterious and charming, the world's first quadrillionaire, the inventor of an unbreakable code, the creator of the world's first great electric currency.

In the new millennium, it is no longer quite acceptable to admire the rich. But Law is both distrusted and admired more than most, more than Anna understands. That will have to change. Rule number one: information is the inspector's greatest weapon. And Anna needs to know what - is it that a man like John Law would seek to hide, and why?

The Cryptographer is a brilliant vision of the London of tomorrow and an unforgettable story of love, codes and money.