ISBN-13: 9781534642430 / Angielski / Miękka / 2016 / 218 str.
RAF Cowdray remained unwanted and unused for ten years until the Cold War gave it a new strategic value as part of the air defence system to counteract incursions by Russian nuclear bombers. Further technological advances relegated the base to a secondary role and it was not until 1960 that it was reborn as a nuclear research facility and again assumed a degree of importance so far as the Ministry of Defence and the British Nuclear Fuels Authority were concerned. Now, the 1994 seismic activity meant that part of an underwater scree had been shifted to reveal a small entrance barely six feet in diameter and an inquisitive diver had decided to investigate. This is the third mystery for Anna and Martin Price to attempt to solve."