<p>From 1917?19, the Tharaud brothers immersed themselves in Morocco while observing the determined imposition of the French Protectorate at first hand. With unique access to both colonial manoeuvres and a now-vanished Moroccan way of life, they settled for periods in Marrakesh, Rabat and Fez to absorb and observe. We join them on visits to the Sultan one day and to the shrine of Sidi Ben Achir ? part shrine, part mental asylum ? on another. They...