I never thought a SuperHero TV show could get this terrifying. In the previous episodes we kinda got a grip of the horrifying power of David and the Yellow Eyes Demon, but it was never really serious, and it was like rainbow and sunshine comparing to this one. This episode shows us the true potential of David's power, and let's not forget, the Shadow King. When David starts singing "Rainbow connection", we get the hints right there about the existent of the demon. David knew that this monster has always been hiding under the beautiful illusions in his mind, as King, as Lenny. The scene in the old house was truly the most terrifying thing I have ever witnessed in a TV show, not even AHS can compare. Making everything muted gives the moment 10 times the horror it already is. FX is doing great with this TV show, excellent episode, re-thinking about my hope of becoming a mutant now.