Sydelle Pulaski figuring out that the clues are the lyrics to "America The Beautiful."
And having the forethought to write her copy of the will in Polish in case anyone stole it.
Judge Ford and Sandy McSouthers spending nearly the entire game systematically investigating the backgrounds of the other heirs. And we find out that end that McSouthers - who was pretty much The Watson for Ford - was Westing himself. And he was pretty impressed by Ford!