In the midst of depression and a steep decline in his musical career, legendary country singer Johnny Cash arrives to play for inmates at California's Folsom Prison on January 13, 1968. The concert and the subsequent live album launched him back into the charts and re-defined his career.

Despite his outlaw image, Cash never went to prison, save for a few nights drying out in various jails. It was not his own experience but rather the crime film Inside the Walls of Folsom Prison that inspired him to pen "Folsom Prison Blues," which was a modest hit for Cash in 1956.