I cannot recommend Skeleton in Waiting but if it were not a sequel I'd probably like it well enough.

Is it that it's a disappointment compared to its predecessor, or that it does unreasonable things with the characters as established in King and Joker, or what?

The Dickinson you want to read if you haven't is A Proper Gallows. It's about a production of The Tempest in 1944, and it's about art and selfishness.

I haven't. That sounds very good. Thank you.