Released in conjunction with the 2008 summer blockbuster National Treasure: Book of Secrets, Tom Jennings' documentary The Hunt for John Wilkes Booth traces one of the largest manhunts in American history. In the aftermath of President Lincoln's assassination, 10,000 federal troops were dispatched to capture the elusive triggerman and his co-conspirator David Herold. In this documentary, filmmakers trace the sixty-mile route traveled by Booth and Herold in real time, winding through the Maryland countryside before crossing the Potomac River and ultimately ending at the northern Virginia tobacco barn where Booth was gunned down.