>> as a reporter, the greatest story would have been to find out that somebody other than him did it. we tried to do it. but at every turn, things pointed to oswald as the shooter but also the only shooter. >> at its core, this is a very simple case. i don't know what this is all about. >> if a person is innocent of a crime, chances there is not going to be any evidence pointing towards guilt why? because he's innocent. >> but with oswald, the physical evidence, the circumstantial evidence, scientific evident, everything points towards his guilt. we'll never know why lee harvey oswadl killed kennedy because he's dead but there are certain things we do know. >> at the age of 13, a probation officer said he remembered oswald as a troubled boy who needed psychiatric help.