24 Hours begins with the perfect family...on the perfect day...about to become trapped in the perfect crime.

Will Jennings is a successful young doctor in Jackson, Mississippi, with his whole life ahead of him. He has a thriving practice, a beautiful wife, and a young daughter he loves beyond measure.

Dr. Chris Shepard has never seen his new patient before. But the attractive young woman with the scarred face knows him all too well. An FBI agent working undercover, Alex Morse has come to Dr. Shepard’s office in Natchez, Mississippi, to unmask a killer. A local divorce attorney has a cluster of clients whose spouses have all died under mysterious circumstances. Agent Morse’s own brother-in-law was one of those clients, and now her beloved sister is dead.

In the heart of North Carolina's Research Triangle stands a corporate laboratory much like the others nearby. But behind its walls, America's top scientists work around the clock to attain the holy grail of the 21st century - a supercomputer that surpasses the power of the human mind.

The Spandau Diary -- what was in it? Why did the secret intelligence agencies of every major power want it? Why was a brave and beautiful woman kidnapped to get it? Why did a chain of deception and violent death lash out across the globe, from survivors of the Nazi past to warriors in this new conflict about to explode? Why did the world's entire history of World War II have to be rewritten as the future hung over a nightmare abyss?

When former prosecutor Penn Cage returns to his hometown of Natchez, Mississippi, he doesn't find the peace he desperately craves. He finds that his own father is being blackmailed by a corrupt ex-cop. And when Penn investigates, he uncovers a murderous secret - and the small town's violent past.