A cell. Four walls, one door. Jamie McCrimmon can escape, but it means unravelling a puzzle of extraordinary complexity.
And there are more than just two players in this game. The Doctor is there. So is his opponent Side.
As a hero turns killer, and a rebellion becomes anarchy, the lines between good and evil are blurred. And so does the distinction between cause and effect ...
As was the case with the audio stories Solitaire and The Time Museum, this Companion Chronicle does not feature any narration. It is a full cast audio drama with four speaking parts performed by only two actors by virtue of four characters only using two bodies to speak.