Penguin Readers is a graded reading series for English Language Teaching (ELT) markets, designed for teenagers and young adults learning English as a foreign or second 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 Spy Who Came in from the Cold, a Level 6 Reader, is B1+ in the CEFR framework. The longer text is made up of sentences with up to four clauses, introducing future continuous, reported questions, third conditional, was going to and ellipsis. A small number of illustrations support the text.
Alec Leamas, a British spy, is worn out and ready to stop working. But his boss wants him to do one final job: to spread false information about an important man in East Germany. Can Alec end his career and finally come in from the cold?