Something happened in a remote jungle-clad corner of the Amazon on August 13th 1930, that terrified the rainforest people of the Rio Curuca out of their wits. Shortly after sunrise the sky turned blood red and filled with dust. There were three mighty explosions, then the ground shook with the force of an earthquake. It seems the people of the Rio Curuca were unique witness to the impact of a meteor of prodigious proportions. If it wasn't for the work of a Catholic missionary who stumbled upon the shocked tribes-people only five days after the terror had fallen from the sky we might never have known anything happened. His report, published in a Vatican newsletter early in 1931, was the first clue to a remarkable scientific detective story that has spanned seven decades and will finally be solved only in this program.