In Book One we learned how Jim Baines, CEO of a major US packaging company, made a simple mistake and discovered that he was a 'whale' - a high value target for hackers looking to profit from the corporate chaos they can cause. It turned out that he was just bait for even bigger prizes - including his old friend, Hannah Simmons, CFO of a huge multinational. Now, with Hannah's career in meltdown, Jim facing the loss of the business it took him years to build and media speculation growing, an investigative journalist closes in on them, sensing the biggest exclusive of her career. Meanwhile in London, a brilliant young hacker prepares to deepen the attack. But who is he working for and what is their ultimate objective? It's a nightmare that's becoming all too common in boardrooms around the world.