I'm so used to the serious episodes that I enjoy... but this was rather funny and a nice change of pace.
I actually enjoyed the campiness of the fog machine, tacky Angel costumes (with what looked like elemetary school cut outs of wings) and the floating cloud chair & harp.
The "mystery" itself was kind of lame, but seeing what an jerk the guy was and how everyone had a reason to kill him was sort of amusing.
The sort of self-referential "wink" at the end of the episode was not something I expected in a 50's show.
NOTE: There is a stereotypical subservient Asian servant, but FOR ITS TIME, it's not too racist.