Maybe you could have an option to Recall "The Facts" or "The Clues" that you've found so far that could point the player towards where they should go next? Regardless, it looks like you've got a good start and a lot of potential for more stories!
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Not to make this comment thread any longer - but that's an excellent idea! I already have the level itself keeping flags of what information the player has been exposed to, and a nice command like "Recall the facts" (which sounds cool, as well) could easily repeat vital information to keep them on track without telling them explicitly what to do. I definitely will plan to implement that!