Emmerson Mnangagwa appeared well-placed to reprise his leading role in Zimbabwe after returning to the country in the wake of the army's takeover, prompted by his sacking by President Robert Mugabe. Nicknamed "Ngwena" (The Crocodile) because of his fearsome power and ruthlessness, the 75-year-old has a reputation for taking no prisoners -- but appeared to have been outfoxed by Grace Mugabe. It was the climax of a long feud between Grace and Mugabe's then deputy to be in pole position to replace the ailing leader when he died or retired.