I love the character portraits, UI, and overall presentation.
I don't know if this is the unsolvable part, but I had no idea of how to say what I wanted to say (walked back through the trail while replicating it) through the presented options.
If you're going to present cases through a diorama, it would be nice to have at least one normal in-universe environment between cases. It's a bit soulless to constantly have a layer of abstraction between you and the game world, even if it's an acceptable compromise for a low-budget game.
You have a typo on one of your screenshots.