Mysterious bacteria are at the centre of a deadly game of cat-and-mouse between the KGB and the MI5-and Blake and Mortimer are at the heart of it! A Soviet rocket falls back to Earth carrying deadly bacteria. KGB Professor Voronov turns the extraterrestrial threat into a terrifying weapon that could be used to devastate the Western world-but he doesn't take into account the vigilance of Her Majesty's intelligence services. Soon, Blake and Mortimer are drawn into a lethal, shadowy war, from Moscow to London, where the stakes are no less than international peace and the real enemy may not be so obvious.