In the dark world of cryptocurrency, there's a high price to pay . . .

From the central bank of El Salvador to a tantalum mine in Rwanda, the Acropolis Museum in Athens to the biggest freeport on the planet in Dubai, enter a world ruled by ones and zeroes and inhabited by people who don't believe in trust.

Nathan Pike is one of those people. To some he's a digital Robin Hood. To others he's nothing but an amoral hacker. A codebreaking and encryption expert, he sells his skills to whoever can pay him what he wants or give him something he needs.

And when he's sprung from a Cambodian prison by a woman calling herself Melody Jones, he's made an offer the likes of which he's never seen before.

MORE PRAISE FOR ANDY MCNAB:

'A tremendous adventure story' - Daily Telegraph

'Extraordinary' - The Times

'A rollercoaster ride' - Guardian

'Full on, fast-paced, gripping' - Sunday Sport

'Authentic to the core' - Daily Express

'Stunning' - Sun

'Unstoppable' - Daily Mirror