For months, New Orleans District Attorney Jim Garrison has been releasing the findings of his bizarre investigation into President Kennedy's assassination, one headline at a time. As his pile of clippings grew, so did the number of skeptics. Last week, in an hour-long program called "The J.F.K. Conspiracy," the National Broadcasting Co. joined the crowd, accusing Garrison of going to considerable lengths to pin an assassination plot on New Orleans Civic Leader Clay Shaw, 54.
Lie-detector tests, said NBC, had cast doubt on the testimony of two key witnesses: Vernon Bundy, a 29-year-old narcotics addict, and Perry Raymond Russo, 26,...