Do you have a favourite teacher? This special episode is for all the teachers and students out there who have inspired one another over the years, and we have two of them on the show. Sarah Moorhead is the author of Witness X and started out as a teacher. One of her students was young Stuart Turton, author of The Seven Deaths of Evelyn Hardcastle and The Devil and the Dark Water. They tell us how they reunited over Twitter and how discussing big ideas in the class can change the course of a life.