The Quill is too limited for serious investigation type games, and it shows here. The concept and ideas are fine, but the game forces the player to do things in a very precise order, or else illogical things happen - events are repeated that shouldn't, access is denied to places, etc. The verb-noun restriction does not help either when dealing with situations that would have required a more advanced parser, but in 1985 there weren't a lot of options.