I liked the book The Detention Club. I thought it had a very unexpected ending.
I would recommend this book to my friends. I thought that it was very good because it showed a lot of different relationships Peter had with each supporting character, including his best friend Drew. I would also recommend it to my friends because I thought it had a very good lesson in it, not everyone is who you think they are.
If someone was to read the book, I think that they should know that every main character turns out differently by the end of the book. The characters in the book all change their impressions about the other characters.