A fantasy adventure about saving the universe one world at a time from Diana Wynne Jones. The companion novel to the bestselling The Merlin Conspiracy.Magids look after all worlds, steer them towards magic, and keep history happening. But Rupert Venables- mentor has just died, and as the junior magid on earth he has to find a replacement while also trying to find the lost heir of a collapsing empire, worlds away. Rupert interweaves the fate lines to get all the candidates together at a sci-fi fantasy convention, and havoc ensues as they all converge on a very strange hotel, where everything is always linked, the walls keep moving, people are trying to kill him, and nothing is as it seems-a magical, epic story from the Godmother of fantasy.