This was a really novel idea for a game. The visuals and audio are great, especially the soundtrack. The lighting effects are nice, too.
A two-button input or a confirmation requirement for opening the door might be a good idea. I kept accidentally hitting F and opening the door, maybe because I would walk away and the prompt would go back to Open instead of staying on Talk.
I would’ve liked to interrogate each visitor with a few questions. That would have been more engaging than just reading one or two lines of dialogue. Even just the option to tell the murderer to get lost or something like that would’ve been fun.
The gameplay is mostly waiting. It would be great to have some other activity in between visitors. The waiting is especially painful when you die and have to replay it.
Overall, a cool idea and a good effort! Congrats to the team!