'As the story opens, it is 1943 and Louise Clermont is working as a decoder at the secret base in Bletchley Park. She is visited by a man who must be very important to even know that she works there. She had delivered a lecture at Oxford in 1931 and had shown calculations that had shown that a rocket such as the one in the Fritz Lang film, Woman in the Moon could be built. She is shown pictures of rockets being built by the Germans at Peenemünde and tells her visitor that they must be destroyed at all costs. To convince him, she tells him a story of something she witnessed in 1899.'
Source: SFRevu (http://www.sfrevu.com/php/Review-id.php?id=12958). (Sighted: 20/6/2014)