Pig-Heart Boy, a Level 4 Reader, is A2+ in the CEFR framework. The text is made up of sentences with up to three clauses, introducing more complex uses of present perfect simple, passives, phrasal verbs and simple relative clauses. It is well supported by illustrations, which appear regularly. Cameron Kelsey is 13 years old. He is not well and needs a new heart. Doctors want to give him a pig's heart. Cameron cannot decide if he wants the pig's heart, and some groups are very angry about doctors using animals in this way.