Do you want to live out your very own version of The Repairer of Reputations? Here's your chance! This scenario puts your characters at the center of an alternate universe from the original story.
In this case, The King in Yellow has indeed warped the world. Your characters unravel the conspiracy that is afoot and hope they aren't driven insane or worse in the meantime.
I really like this supplement from the perspective of a non-fanatic of Lovecraft. I haven't read all his stuff and am not intimately familiar with all the details of a given story. Are you like me? Good news! The entire Repairer of Reputations story is included. The rest of the details are fairly standard with an overview of the plot, detailed events, and in this case a Quick Character Creation section over pre-generated characters.
I like the idea of integrating an actual story into a scenario because it feels more "real" if that's a thing. It is awesome to see how Laws weaves the fiction into the scenario and allows you to have a go at combating the horrors that be. As always, I love ToC and highly recommend any new scenario that I can get my hands on.