The best way to escape your pursuers without leaving a trace is to walk backwards, over your own footprints. That was the belief of François Augiéras, who covered a military bunker in the desert with paint and then let it sink into the sand so that no one would find it until the 21st century. But who is Augiéras? Legionnaire, painter, writer, gunman, saint, thief, devil, or a mixture of all of the above?