The cast and crew discussing the transition from Tom Baker to Peter Davison, including exclusive behind-the-scenes footage of the regeneration.
Several key production personnel look at the making of K-9 and Company: A Girls Best Friend, plus K-9's subsequent life in books and comic strips is examined and explored.
By the end of Tom Baker's tenure, the TARDIS crew had grown from the usual one companion to three. This featurette examines the reasons behind this change of direction.
