First of a 5-volume series of audio dramas starring Tom Baker as the Fourth Doctor, following the popular Hornets' Nest and Demon Quest series.
In a distant galaxy, the Tsar and Tsarina rule over the Robotov Empire from the safely of their palace, whilst human workers tend the power plants on satellite moons.
When the Doctor arrives with Mrs Wibbsey, his identity is immediately mistaken, and the Tsarina believes that her old ally, Father Gregory, has returned. But when the Palace comes under attack, the Tsar suspects him of treachery.
What dark secrets lurk in the shadows of the satellite moon? And what is the conspiracy set in the mind of Father Gregory?
Starring Tom Baker, Susan Jameson, Michael Jayston, Suzy Aitchison, Simon Shepherd, Sam Hoare, Paul Chequer, Grant Gillespie, and Gabriel Vick.