In January 1956, five American missionaries travelled to a remote part of South America to contact an isolated tribe then known as the Aucas. The story of their deaths and what happened between the families of the fallen men and the tribe who killed them is told in a new Imagination Station book: "In Fear of the Spear." Steve Saint (son of one of the missionaries) and Marianne Hering (author of the new book) tell how the new book came together.