What was "King Egg" (a.k.a. Aegon V) trying to do at Summerhall, and why did it go so horribly wrong? Those are the questions I'll answer, covering both the well-established Summerhall theories as well as some new ideas I am bringing to the table. Explosive dragon's eggs, visions of the Prince That Was Promised, kingsblood, wildfire, and potential maester conspiracy, plus a new find for the "Dunk held the sand-door at Summerhall" theory, it's all here.