Who Killed JFK: The Conspiracies: Over the decades, unanswered questions, tampered evidence, ulterior motives, and witness testimony surrounding the assassination has perpetuated conspiracy theories and alternative explanations that challenge the official narrative. Most of the figures involved--or knew who was involved--have mostly passed away, leaving avenues of investigation dead in their tracks. Over time, efforts to determine what happened have left more questions than answers. We take a look back on the moment that changed the course of world history, questioning the official record. Was the assassination a conspiracy?