At first, I was reluctant about reading this book. What on earth could Francis Crick add to the story of the discovery of the double helix, that had not yet been told by his colleague, James Watson, in his famous book "The Double Helix"? A lot, as it turns out. In fact, the two books rarely overlap. Whereas Watson's book mainly relates his experiences as they worked their way towards discovery, Crick does what he does best: making comments. Also, Crick's book doesn't stop at the discovery of the double helix structure of DNA, as Watson's book does, but continues with the cracking of the genetic code.Crick's book was written twenty years after Watson's book, and it shows. Watson's book contains a fresh story, the raw material out of which history is shaped. Crick's tale is a digested one: written after all the confusion of the moment had cleared up.