That's a pretty impressive list of actors - too bad the series wasn't better. With little involvement from Welles beyond hosting, it sounds like the TV equivalent of The Black Museum. There was another mystery series for TV that Welles was going to host in the early 80s, called Scene of the Crime. I saw the pilot on VHS. Not very memorable, I'm afraid. Also, in the lost opportunity dept.: Burt Reynolds says that, the day before Welles died, there was an agreement reached with Spielberg to let him direct an episode of Amazing Stories. I wonder what story he would have chosen.
The early 70s show that I'm longing to see again is Welles hosting The Kopykats, with Rich Little, Frank Gorshin, George Kirby and other impressionists. One of the funniest TV series I've ever seen. Does anyone know of any bootleg copies floating around out there?