I'm not one who tries to "outguess the author" when I read mystery novels or watch movies.  I enjoy the ride.  So maybe I'm not the target audience for this piece. 
 
CUFF contains a really fun play idea--I just had a hard time getting it going.  The first playthrough, I threw the wrong guy in jail (sorry!).  The second time, after I thought I'd exhausted the number of items I could examine, I hit a wall.  Almost none of the descriptions repeat themselves more than once, so I reached for the walkthrough.   
 
I don't think I would have solved the crime without it.  Even after the walkthrough, I didn't quite catch the thread of logic.  But I also feel this way after reading some mystery novels, so it could just be the way my head works. 
 
Definitely play this one--the writing is a plum, perfectly in-genre--just know it takes a very careful eye to untangle the real mystery.