Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An R-rated mystery for kids under 10?

I picked up The Case of the Missing Marquess in the library to read aloud to my daughter, who's seven now but has been enjoying mysteries since she was four, when we started reading Nancy Drew to her. On page 3, we read about a (live) prostitute with haggard eyes and another who "was recently found dead a few streets away, slit wide open." OK, so we stopped right there. I don't want that image even for myself -- not to mention to have to explain it to a kid and embed it in her very literal imagination. So while the book may be acclaimed by many of its readers and be advertised for kids 9-13, I would *definitely* put the lower limit on this book higher than age 9.