It is no ordinary juggernaut. Longer than a football pitch, weighing 550 tons, and moving at just five miles per hour, its job - and that of troubleshooter Neil Mannix - is to move a giant transformer across an oil-rich African state. But when Nyala erupts in civil war, Mannix's juggernaut is at the centre of the conflict - a target of ambush and threat, with no way to run and nowhere to hide...