This game is written using the Strand Games engine, a nice and smooth interface that was developed to 'restore' the Magnetic Scrolls games from a few decades ago.
I like the way it looks and moves, it feels very smooth. The voice acting option (I think it was different text-to-speech readers, at least for some of them?) are a nice change of pace after how hard it is to get sound working in Inform.
The game itself isn't quite as alluring. It's a collection of fairly tropey characters in a fairly tropey setting (a major, a dilettante child, a butler, etc. in a manor). And the puzzle seems to consist in just asking who was where and figuring out which one person was lying.