I really have a soft spot for logic grids / deduction puzzles. This is very well designed and I was noticing more things as I played, the highlights when you hover over clues etc. It is a very nice touch. It took me couple tries before solving my first murder mystery here, but I blame that mostly on the fact that I had to google "minesweeper rules", lol.
At first I was a little lost until finding the "?"up in the top corner so I saw the tutorial and could begin playing. I also scrolled down to comments and only then I got it that the gun is interactable, also I think the music stops after one play?
That being said, I honestly say that I enjoyed the game very much and I am probably a part of target audience for a more fleshed out and even more polished version. (If there is already a game like that out there that you took inspiration from, let me know :D)