In Escape from Pretoria, Daniel Radcliffe does everything he can to hide away the face of the Boy Who Lived. His forehead, once marked by a lightning-bolt scar, is now buried under a swell of thick, sweat-matted curls. A beard covers one half of his face. Oversized, clear plastic glasses take over the other. And then there’s the accent: a South African twang that occasionally slips and slides into other nations.