Fantastic entry and interesting take on the theme! I was hooked from the moment I was placed in the detective mode and I was determined to figure out the mystery - and I did! I really loved the added notepad and the clues system (the drawing feature was a nice touch), and I definitely see the inspiration from L.A Noire which is great (I love that game!).
It was a bit easy to get lost, but it wasn't so bad because the movement speed was good and there wasn't too much to explore (which is a good thing, otherwise it could be a bit confusing / stale).
Other than that, the graphics are cool but there's definitely room for improvement in the environment and the chat ui, and the music track could be longer.
Great entry! Congrats!