They've come from out of the shifting sands and down from ancient mountains. Mounted on horse and camel, carrying gleaming swords and plundered rifles, the sons of Allah are led by a holy warrior imbued with jihad, driving his army of thousands to wipe out the last Englishmen from the isolated Nile city... But in Khartoum is a legendary British general, a brilliant, mercenary trader, a beautiful woman and a courageous soldier whose fates have…