No mystery here. Please read Gerald Posner's "Case Closed". After clearing your head of all the mindless conspiracy theories (they ALL can't be right) and just use common sense and look at the raw data of the assassination you only can come to one conclusion - Oswald did it alone, period!!! The "magic bullet" was not magic, the shots DO line up, Oswald DID have enough time to fire 3 shots, head motion of Kennedy was perfectly natural, IMPOSSIBLE to alter body after the assassination - too many people would be needed and how do you know before hand what alterations - if necessary - would be needed. The conspiracy theorists in my opinion are ignorant of science and do not use simple common sense - and many are just nuts and friut cakes. I can go on and on and on.