Two new adventures bringing back one of the Doctor's most `popular' foes - the Cybermen! Warzone - At Warzone, competitors gather from across the galaxy to test the limits of their endurance and achieve their personal best. So,when the TARDIS materialises in the middle of a racetrack, the Doctor and his friends must literally run for their lives. Conversion - On the fringes of the galaxy, techno-pirates and research medics fight for the secrets of advanced extra-terrestrial technology. For the Doctor, however, a more personal battle awaits as he confronts his own guilt and the creatures that killed a friend: the Cybermen. CAST: Peter Davison (The Doctor), Sarah Sutton (Nyssa), Janet Fielding (Tegan Jovanka), George Watkins (Marc), David Banks (The Cyber Leader), Timothy Blore (Morris), Angela Bruce (Herb), Silas Carson (Commentator), Mark Hardy (Cyber Lieutenant), Pepter Lunkuse (Esma), Liz Sutherland-Lim (Creasey). Other parts played by members of the cast.