giancarlo grew up loving planes. but this flying coffin ended that romance.. very emotional. >> reporter: how did a young, italian photographer, armed only with a camera, an eye or detail and burning curiosity, come to unravel one of the great national shames of argentina? it all began in 2003, when ceraudo was in buenos aires working on a project about the disappeared. he heard about the death flights in the 1970s but the stories were never fully told. so many unanswered questions and so little accountability. if there were flights, he reasoned, surely, there were planes and there were pilots. so, where were they? you knew those death flights existed. how did you start your search for the planes? >> i had an idea. but to start the investigation, started with miriam. >> reporter: miriam is miriam lewin. she was a young student activist in 1977, when she was kidnapped, tortured and sexually abused. she was taken to esma and was among the few who survived. though she never knew quite why. later, she became a leading investigative journalist in argentina, best k