In the first two books of this trilogy (“Cashback” and “Their Own Game”), mysterious and unexplained men on motorbikes appear from time to time. This final book explains their top secret role. One of Britain’s top particle physicists, Jack Barclay, is on the verge of a major breakthrough in developing the nuclear fusion process into a clean and sustainable alternative to carbon fuels. News of this spreads round the world, causing great interest in most nations, but grave concern in Russia. When other countries, including America, seek collaboration to help speed his work, Russia determines to put an end to Barclay’s research at the Harwell and Culham laboratories.