First the puzzles are well built, sometimes twisted but really nice, then the characters are endearing and super red wire of the game is always unpredictable. Not to mention the excellent quality of music.
Regarding this episode of Unwound, I admit that this is my favorite. The puzzles are more accessible and the story is really exciting. The twists are spectacular and the end is overwhelming, but I will say no more to not spoil the fun.
In short a very good game on DS which one does not pass until the solution is not discovered. The only downside, but that's my personal opinion, is that once the game over the interest disappears because we know the answers ... Fortunately, thanks to the wi-fi connection can download new puzzles every week unpublished let alone some bonus extras once raised during the investigation.