Starring: Sylvester McCoy, Bonnie Langford

Written By: Sylvester McCoy, Bonnie Langford

Dark Space 8 - an advanced monitoring station floating serenely among the stars. Its crew - a dedicated and highly-skilled group of professionals, calmly going about their vital work. Its mission - to boldly host the Intergalactic Song Contest.

Starring: Colin Baker, Maggie Stables

Written By: Colin Baker, Maggie Stables

On Chronos, two survey teams have vanished. Earth security despatch a third team, and three strangers are added to the mix, including the Doctor and Dr Evelyn Smythe. Can they solve the mystery before the Cybermen rewrite the history of the galaxy?

Featuring David Darlington's music score from Excelis Dawns, Excelis Rising, Excelis Decays and The Plague Herds of Excelis.