Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disturbing, uncomfortable, heart-breaking

The book is a cross between Angela's Ashes and The Curious Case of the Dog in the Night-Time. The narrator is an adolescent boy who has developmental problems and has a family ill-equipped to deal with them. There is a false note of hope at the end of the book, but we know enough about the characters at this point to know that no happy ending will ever occur. There are brief dark moments of sexual tension between the mother and son that are quite uncomfortable and just add to the sense that the reader is a voyeur watching damaged human beings. The writing is quite good, but the subject matter is heart-breaking.