United Airlines Flight 629. In 1955, a four-engine prop plane carrying 39 passengers and 5 crew members exploded over Longmont, Colorado. Early into the investigation it was quite obvious that this was no accident. The plane had been sabotaged. The question was why. As the evidence mounted, a clear suspect was revealed, arrested & tried. The motivation for the bombing seemed to be an old grudge. Join us as we discuss how a solid investigation brought a mass murderer to justice.