Book excerpt: In 1975, the Emperor Haile Selassie of Ethiopia, recently deposed in a Communist revolution, was declared dead. In the hands of the brutal army officer Mengistu Haile Mariam, the country descended into chaos and bloodshed. Then an astonishing truth emerged. The Emperor was not dead. He had been kept alive in prison by Lieutenant-Colonel Mengistu, whose objective was to wring from him his massive fortune bullion, jewels, cash and shares amounting to £2.5 billion lodged in Swiss, British and New York banks. In London, bankers and diplomats were appalled. The banks could not contemplate the loss of such a huge sum. The British and American governments would not tolerate a ruthless Communist regime's acquisition of wealth: it would destabilise the Middle East and all East Africa. There was only one answer: kidnap the Emperor. And there was only one organisation capable of mounting the operation: the legendary Special Air Service the SAS! Three men Peter Halloran, Michael Rourke and Richard Collins were selected for this hazardous mission, which was like nothing the regiment had ever tackled before: to penetrate a remote desert fortress and then to escape through arid highlands with a frail old man in tow. Only extraordinary duplicity would get them in. Only acute tactical expertise and merciless improvisation would get them out. And if anything went wrong, it would be as if they had never existed.