Gideon. An identity shrouded in mystery - the anonymous source who holds the key to an explosive secret. In a clandestine meeting, writer Carl Granville is hired to take the pages of an old diary, articles, letters, documents in which all proper names and locations have been blacked out - and turn them into compelling fiction. He will be paid a quarter of a million dollars. But he can never tell a soul.

As he is fed information and his work progresses, Granville begins to realize that Gideon's book is more than just a potential bestseller. It is a revelation of chilling evil and a decades-long cover-up by someone with far-reaching power. He starts to have second thoughts. How will his book be used? Whose lives will be shattered? What is the truth behind the story - and who is the true storyteller?

Then someone close to Granville is bludgeoned to death. Another is savagely murdered. His apartment is ransacked, his computer destroyed, all his records stolen. Suspicion falls on Granville. He tries to explain the shadowy assignment. No one believes him. He has no proof, no alibis...