King

Remember when Marty Hart talks about "the detective's curse" -- how the solution to a case can be sitting right under your nose and yet be overlooked? Well, turns out that while the Internet has been dissecting weird fiction and Saturnalia, the identity of the show's mysterious Yellow King has been hiding in plain sight all along. Fortunately, YouTube user "Kyle" has gathered the evidence and put together a fairly unassailable argument. Guess that's one less mystery to solve. (Thanks to supersleuth Danny Bowes for pointing this out to me.)