I admire the concept of this enormously (I remember that game Sleuth, it was brilliant!) The implementation is also deeply good, and the NPCs are good examples of interesting characters with rich conversation but without the need for too many bells-and-dongles. I also liked the system for making an accusation; it felt natural and smooth. But I found some of the details of the puzzles frustrating and thin and all to quickly I was just prodding and poking my way forward blindly. There are so few IF mysteries that it's almost a shame the author didn't just write one great one! But a deserving award-winner and a neat bit of coding.