Former CIA agent Bob Baer launches a global investigation into assassin Lee Harvey Oswald and the murder of President John F. Kennedy. Bob makes a staggering discovery: a declassified CIA document reveals that Oswald met with Soviet officials in Mexico City only six weeks before the assassination.

The investigation explores deeper connections between Oswald and the Russian government as the team tracks down a former KGB officer who offers revealing testimony.

The investigation heads to Louisiana, where Oswald lived months prior to the assassination, and reconstructs the killer's timeline in New Orleans, where the team uncovers a "dark period" of weeks where no one can account for his whereabouts or activities.

Declassified government files reveal that months before the assassination Oswald may have trained with mercenaries and violent extremists in the swamps of Louisiana.

CIA veteran Bob Baer's investigation leads him back to the scene of the crime in Dallas; examining Lee Harvey Oswald's every move in Dallas, Bob seeks to prove he had help in his mission.

Bob retraces Lee Harvey Oswald's every step in Dallas, attempting to reconstruct his planned escape after the assassination; Bob makes an unbelievable discovery; the team ventures into international waters to pressure test their findings.

On October 26, 2017, the federal government released thousands of highly classified documents related to the assassination of President John F. Kennedy. In this hour-long special, Bob Baer examines the most shocking documents as he reconciles discoveries he’s previously made, with the information found in these newly released archives. These files could hold the key to finally answering on of the most riveting mysteries of our time: Did Lee Harvey Oswald act alone in the murder of JFK?