Right over on the AP part of the site I have posted my review/AP of fear itself which uses the Gumshoe system. Personally I think it is a poor system with huge design flaws, the major one being that the players can't really get it wrong. Bull!
So in order to address this I have been thinking how to design an investigative game where the players can get it wrong but that doesn't mean the game will grind to a halt. This is basically going to be me thinking out loud a bit as an experiment.
So to my mind the game needs to include the following:

