Angie Sage, author of the internationally bestselling Septimus Heap series takes up the story of TodHunter Moon seven years on and so begins a magykal new adventure in Pathfinder. She is joined by the highly acclaimed Catherine Fisher, a Welsh writer and broadcaster whose latest book The Door in the Moon continues her Chronoptika Quartet, weaving science, myth and time travel. They are two of our best fantasy writers. Join them for a conversation about creating fantastical worlds, mixing good and bad magic and bringing superlative storytelling to lucky readers.