Undercover with the KKK

Undercover with the KKK is a 1979 NBC TV movie based on the autobiography "My Undercover Years with the Ku Klux Klan" by Gary Thomas Rowe Jr. and starring Don Meredith as Rowe.
Premise.
The film tells the true story of Gary Thomas Rowe Jr., who infiltrated the Ku Klux Klan as an undercover agent and then testified as a key witness for the prosecution during the trial of several other Klansmen.