The tribulations of Che Guevara, the T-shirt Christ, still continue to fascinate, almost half a century after he was executed in the Bolivian jungle; so, too, continues the hunt for the Judas who betrayed him. A prime suspect has long been the artist Ciro Bustos, who, caught by the CIA-backed Bolivian crack squad sent to track down the Argentinian revolutionary, was accused of providing sketches of his old comrades. A few weeks later, Che was captured and gunned down in cold blood. After a silence over four decades long, Bustos has produced his defence. It makes for a fascinating read, a beautifully written and melancholy tribute to the energy and madness that drove Che to help Castro to overthrow Batista in Cuba and led to his death in Bolivia.