Maurice Wilkins shared the 1962 Nobel Prize for Physiology or Medicine with Francis Crick and James Watson for the discovery of the double helical structure of DNA. A physicist, he worked with John Randall in the late 1930s on the development of radar, moving to the USA during World War II towork on the Manhattan project. After the War he joined Randall at King's College London and with Rosalind Franklin began an investigation into the structure of DNA. The story of Rosalind's work on the project, and her bitterness with Maurice for having given her data to Watson and Crick withouther permission, is a well-known one, and has recently been brought once again into the spotlight by Brenda Maddox's biography (published in 2002). Now, for the first time, Maurice Wilkins tells his side of the story, showing that it is not as simple as it has sometimes been portrayed.