In July 1978, the Argentine military junta threw a party. The venue was the Estadio Monumental in Buenos Aires. The guests were seventy-seven thousand flag-waving supporters and, via television, hundreds of millions more around the world. The occasion was a World Cup final. The hosts won. General Videla stood in the presidential box and beamed. Somewhere beneath the city, in the network of detention centres that the regime called chupaderos, literally, “sucking places”, peopl