With carefully adapted text , new illustrations , language practise activities and additional online resources , the Penguin Readers series introduces language learners to bestselling authors and compelling content . Titles include popular classics , exciting contemporary fiction , and thought-provoking non-fiction . Fool Me Once, a Level 5 Reader, is B1 in the CEFR framework. The text is made up of sentences with up to four clauses, introducing present perfect continuous, past perfect, reported speech and second conditional. It is well supported by illustrations, which appear regularly. Maya's rich husband Joe was murdered in New York. One day, Maya sees something on her nanny camera which makes her question everything that she knows about Joe's murder. As she searches for answers, Maya gets pulled deeper and deeper into a world of lies and secrets.