Great job! The story was interesting, and the photo mechanic is well implemented. One point of user-friendliness that would help is giving a bit of space between detecting the click for advancing the dialogue and the one for signalling a clue. I managed to waste all my chances to look at a photo due to over-clicking but perhaps that’s just me.
This is a good solid foundation for a micro release, the mechanics are solid and with some more time, I’m sure the art would shine. If you added two more “cases”, I’d think you’d have a nice little product.