It is May 1940. Western countries are falling into Nazi hands. Britain must prepare to be invaded any day. The future of the world lies on the shoulders of one man. This is the story of how British Prime Minister Winston Churchill changed history over twenty-five difficult days during World War II.

Penguin Readers is a series of popular classics, exciting contemporary fiction, and thought-provoking non-fiction written for learners of English as a foreign language. Beautifully illustrated and carefully adapted, the series introduces language learners around the world to the bestselling authors and most compelling content from Penguin Random House. The eight levels of Penguin Readers follow the Common European Framework and include language activities that help readers to develop key skills.

Darkest Hour, 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.