The Beginning, by Marc Platt

This was the 50th Anniversary release in Big Finish's Companion Chronicles series - a story told by Carole Ann Ford as Susan, explaining the very first adventure that she and the Doctor had after leaving Gallifrey and landing on Earth. Terry Molloy, who was Davros to the Fifth, Sixth and Seventh Doctors on TV, plays a disconsolate Gallifreyan technician called Quadrigger Stoyn who was accidentally brought along for the ride - apparently he will be a recurring character. I liked this though I won't rave about it; the first quarter of an hour, describing the first stages of their departure from Gallifrey, is excellent, carried solo by Ford who clearly loves it. The subsequent story of how Susan and her grandfather deal with Stoyn and the first of many alien threats to humanity is OK, but perhaps not quite right for this format.