Matt Ridley's biography traces Crick's life from middle-class mediocrity in the English Midlands, through a lackluster education and six years designing magnetic mines for the Royal Navy, to his leap into biology at the age of thirty-one. While at Cambridge, he suddenly began to display the unique visual imagination and intense tenacity of thought that would allow him to see the solutions to several great scientific conundrums -- and to see them long before most biologists had even conceived of the problems. Having set out to determine what makes living creatures alive and having succeeded, he immigrated at age sixty to California and turned his attention to the second question that had fascinated him since his youth: What makes conscious creatures conscious? Time ran out before he could find the answer.