Code to Zero is a novel by the British author Ken Follett, published by Pan Macmillan. The story follows Luke, an amnesic who spends the duration of the book learning of his life, and slowly uncovering secrets of a conspiracy to hold America back in the space race.It is set out in both chapters and parts. There are five parts to the book, and an unspecified number of chapters which are titled by the time of day they are set, rather than the more common numbering system.