On September 21, 1976, a bomb ripped through Embassy Row in Washington D.C., killing former Chilean Ambassador Orlando Letelier and his associate. This politically charged assassination sent shockwaves through the world. Relive the investigation in this gripping episode of "The FBI Files," as we delve into the shocking truth behind the murder and expose a conspiracy that reached the highest levels of power. Was it revenge? A message? Or something far more sinister? Uncover the secrets and the shocking perpetrators in this explosive true crime documentary.