Audio drama on 2CDs starring Peter Davison, Sally Knyvette, Derren Nesbitt and Paul Copley. On a dark frozen planet where no planet should be, in a rat-infested city with a sky of stone, the Doctor and Nyssa unearth a black market in second hand body parts and run the gauntlet of augmented police and their augmented horses. And just between the tramstop and the picturehouse, the Doctor's worst suspicions are confirmed: the Cybermen have only just begun.