If it hasn't already been started, I think we should start the rumor that it is the burial of Akhenaten's five daughters (or did he have six. Even though I'm a incurable amarnaholic this is one part that has never really interested me.) that have been inexplicably missing from the record. Now to sweeten the pot we can start the rumor that there's another shaft tomb 15 meters on the OTHER side of Tut's tomb that has another cache of Akhenaten, Ti, Nefertiti, Kiya, and Smenkhare (see there's five again!). These two caches represent the base of the triangle so using a little geometry we just have to figure out where the apex of the triangle and we'll find another shaft tomb containing another cache of five graves.