Geraldine McCaughrean's The Supreme Lie has it all - fake news, fake politicians, puzzles and dogs! Geraldine uses a flood in a made-up country to explore whether lies are ever justified. We discuss whether the book is about environmental catastrophes or political corruption, and what makes it such an amusing and likable book, despite the dark subject matter. We also discuss another book about lies, Frances Hardinge's The Lie Tree, and Geraldine McCaughrean's tale of survival Where the World Ends