Is there a way to correct a typo in the Subject line?
When the Beatles would write songs, they would often plug in nonsense lyrics to be fixed later. This occurred with "Hey, Jude." When Paul demonstrated the song and came to the lyric "The movement you need is on your shoulder" he said "Don't worry, I'll fix that later." John replied "No, it's perfect, leave it." I have no idea what a shodunnit would be, but it's somehow perfect. "Oswald sho' dunnit, baby, of that I'm sure."
Your Perry Mason example is ironic. I laugh at the many, many episodes which are so complex that they end with Perry, Della and Drake sitting around a restaurant table. The plot has been almost impossible to follow, and the director knows it, so Della launches into her little summation for the benefit of the viewers: "And so, Perry, then Shirley was actually Ted wearing a latex mask ... and the dog in fact belonged to Bob ... and it all tied back into that confrontation between Shirley and Babs when they were on summer vaction in Istanbul back in college ... right?" Perry: "That's right, Della." Roll the credits.
There are two aspects to the JFKA: (1) Was Oswald the lone gunman in Dealey Plaza? and (2) Were Oswald and Dealey Plaza the whole story? It's almost absurd to suggest there is no whodunnit aspect to either of these. The WC, the HSCA, the Church Committee, the ARRB, the current legislative movement ... the vast number of technical medical, ballistic and forensic articles ... the 1000 or so books, ranging from the absurd to the definitely not absurd ... the concerted effort to keep the lid on the LN narrative ... yada yada yada - it all flies in the face of the JFKA being as cut-and-dried as you for some reason insist is the case.
As I've stated more than once, those who are clearly obsessed with the JFKA, but for no other reason than to keep hammering and hammering and hammering the LN narrative as though it were their religion and needed to be defended against any and all infidels, are a bigger mystery to me than any
Harvey and Lee cultist.