This was a very interesting take on a murder mystery, I don't completely get how it works but I think you made it so that it's a limited thing? or maybe you can only have a limited amount of conversations before the game ends? I just wish there was an indicator, maybe something simple as the train's arrival to the destination as a timer? Having to go through everything again just to unknowingly lose is kinda frustrating but I get what you're trying to do.
Great job on this game regardless!