Had a blast playing this! I love that the case is so layered even with such a simple and confined premise and that you presented it in a way that allows the player to analyze and interpret the environment on their own without holding their hand.
The drawing and dragging mechanics are by far the highlight. I'd love to see that kind of interactive gameplay expanded on. I also appreciate that you grade with stats at the end so players have an idea of how close they are and how much is left to find. It really encourages multiple playthroughs.
Nice touch framing this as Watson solving his own case and having to report back to Sherlock for evaluation. Very cool aesthetic to the game as well. Loved everything about it. My only criticism is to clean up the text as far as grammar/spelling etc. Overall, you guys did a wonderful job. Good luck with future games!