The year is 2085, and planet Earth remains on the edge of a nuclear precipice. At any moment, either of two vast rival power blocs, to the West and the East, might unleash a torrent of missiles, bringing about the terrible certainty of Mutual Assured Destruction. But there is another way or so Professor Ruth Drexler believes. Hence her secret mission deep in Eastern bloc territory, to uncover a hidden city, never before glimpsed by human eyes: the Parliament of the Silurians, the lizard people who ruled the Earth before humankind.There, shell encounter a time-travelling Doctor, who knows the Silurians well. A Doctor on a secret mission of his own. CAST: Sylvester McCoy (The Doctor), Sophie Aldred (Ace), Bonnie Langford (Mel), Fiona Sheehan (Ruth Drexler), Nicholas Asbury (Chairman Bart Falco), Nicholas Briggs (Chordok), Caitlin Thorburn (Karlas), Ignatius Anthony (Gorrister), Louise Mai Newberry (Director Shen). Big Finish have been producing Doctor Who audios since 1999, starring Tom Baker, Peter Davison, Colin Baker, Sylvester McCoy, Paul McGann, David Tennant and John Hurt. The Silurians - reptiles who lived on the Earth before Humanity, and want to put this right - have appeared in the TV series several times, facing off against Doctors played by Jon Pertwee, Peter Davison and Matt Smith. Star Sylvester McCoy played the Doctor on television between 1987 and 1996, but is also recognised from such works as Peter Jackson's The Hobbit films.