It was a crime that shocked the world - and sparked an investigation that is still going on today. Even after 40 years, the assassination of John F. Kennedy remains one of the 20th century's most enduring and controversial mysteries. Was there a conspiracy? A cover-up? Was Lee Harvey Oswald the only gunman? As the network of record in forensics and criminal investigations, Court TV's signature series Forensic Files will take a fascinating new look at the forensics behind the Kennedy assassination investigation, including a controversial piece of evidence that may hold clues to whether there was just one gunmen - or more.