I played this game as part of the short games showcase.
This game is a murder mystery, but a condensed one. It has 4 locations, each with their own person of interest (although one is mobile).
Each one lets you ask a long list of questions. You can then gather from them what information you need. Upon leaving the manor, you can guess who the murderer is.
There isn't too much replay value, as the true murderer is pointed out to you upon the first guess. There is voice acting in a way I haven't seen much in IF; I think it uses various text-to-speech voices, including a stentorian butler voice.
Overall, the system feels smooth. I do think that a more drawn out game, with some choices you must carefully consider (like things you can say that cut off other options) might increase the overall value if a longer mystery were to be made.