The Arc Dream team never disappoints, but this is truly an instant classic. King in Yellow adventures are notoriously difficult to run because of the mind-bending atmosphere required to authentically represent this aspect of the Mythos. And yet, Dennis Detwiller has managed to make an entire KiY campaign not only accessible to Handlers, but one that gives them all of the grounding and resources needed for them to excel in building the necessary tension, paranoia, and otherworldliness. I'm truly impressed.
As if this wasn't enough, the presentation is gorgeous and the formatting makes the book a pleasure to explore. Like "House of Leaves," reading it is an experience unto itself. The NPC portraits, handouts, and other supporting images are top notch as well.
Kudos to Dennis and the rest of the team! I cannot wait to run this campaign.