Film based on the life of Dr. Salvador Mazza, who, with a group of professionals, conducts an investigation to discover the antidote to a mysterious illness whose carrier is a nocturnal insect. A Mazza was regarded as the first doctor who fought the deadly Chagas disease in Argentina.
Harry Havilio
José Luis Alfonzo
Miguel Ángel Solá
Maria Lorenzutti
María Dorila Lanz
