Prisoner B-3087 is very memorable and solemn book. In my opinion, I recommend this book to young adults in age from 14-15, because there is some violence and cruelty in the book. This book is a true story based on Ruth and Jack Gruener but the characters are fictional. Although there will be few glimpses of violence in the book, I highly recommend this book to who likes adventure books and who is interested in wars of Jews.