Sylvester McCoy (The Doctor), Sophie Aldred (Ace ), Ricky Groves (Markus Creevy), Beth Chalmers (Lt Raina Kerenskaya/Sezhyr), Nicholas Briggs (Hhessh), John Albasiny (Major Maxim Alexandrovitch Felnikov), Nigel Lambert (Adjudicator/Vitali Semyonovitch Wolshkin/Glarva), John Banks (Yevgeni/Yasha Lemayev)
Moscow 1967. The Doctor and Ace have arrived behind the Iron Curtain, and the Soviet Union is seeking a new weapon that will give it mastery in the Cold War.
What is the secret of the Martian relics? As the legendary War Lord Sezhyr returns to life, The Doctor is faced with some of his oldest and deadliest enemies.
The fate of Earth – and the future of Ace – are now intertwined.
- Thin Ice is an audio play based on the unproduced story Ice Time, which was originally scheduled as one of the stories for the planned Season 27
- Ace is unfamiliar with the Russian words “glasnost” and “perestroika”. The Doctor notes that they would not become well known in the West until several years after her native time.
- The Doctor claims to have last visited the Kremlin centuries earlier.
- Ace first visited 1960s London in Remembrance of the Daleks.
- Ace refers to Perivale (Ghost Light, Survival) and Fenric (The Curse of Fenric).