Penguin Readers is an ELT graded reading series, designed for teenagers and young adults learning English as a foreign language.

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.

The Invisible Man, 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.

Griffin is a scientist, and he discovers how to make things invisible. Then he becomes invisible himself. Griffin thinks that an invisible man will have a lot of power. But life becomes more and more difficult.